Mwala wa Yuhua ndi mwala wachilengedwe wopangidwa ndi mphamvu yosiyana ya madzi oyenda m'nthambi za mitsinje ndi mitsinje ikuluikulu, wophatikizidwa ndi kupangika kwa mchere pang'onopang'ono kwa zaka zikwi mpaka mamiliyoni ambiri—mwala uliwonse uli ndi zizindikiro zapadera za kusintha kwa nthaka ndi madzi. Umachokera ku mitsinje yokhala ndi mitsinje yambiri yomwe imadutsa m'mapiri a m'mapiri ndi m'madera otsetsereka: madzi oyenda pang'onopang'ono m'mitsinje yopapatiza, yozungulira amachepetsa kukangana kwakukulu, zomwe zimapangitsa kuti tinthu tating'onoting'ono ta mchere (tomwe timanyamulidwa ndi madzi amvula pamene tikudutsa m'miyala yozungulira ya granite ndi miyala ya limestone) tikhazikike pang'onopang'ono pa zidutswa za miyala yolimba. Zidutswa izi, poyamba zimakhala zokhota komanso zosafanana, zimapita pang'onopang'ono m'mitsinje ikuluikulu yothamanga mofulumira, komwe mafunde amphamvu amawayendetsa motsutsana ndi miyala, mchenga wakuthwa ndi miyala yolimba ya m'mphepete mwa mitsinje—kugundana kosalekeza kumeneku kumapukuta pamwamba pawo wosanjikiza ndi wosanjikiza, kuwononga m'mphepete ndi kusalala kwa mizere. Mineral monga quartz (yowonjezera kunyezimira kowala komwe kumagwira ndi kufalitsa kuwala pang'onopang'ono, kupangitsa mitsempha kuwoneka bwino pansi pa kuwala kwachilengedwe), feldspar (yobweretsa minyanga yofewa ya njovu kapena pinki yopepuka yomwe imasintha pang'ono ndi kuchuluka kwa kuwala kwa dzuwa komwe imalandira panthawi yopangidwa) ndi ma iron oxides (opanga dzimbiri lofiira kapena la amber la uchi lomwe limazama pamene zidutswa zimakhala nthawi yayitali m'madzi osaya okhala ndi mpweya wambiri) zimasungunuka m'madzi a mtsinje okhala ndi asidi pang'ono (opangidwa ndi zinthu zowola) ndikulowa m'ming'alu yaying'ono ndi ming'alu ya zidutswa. Pamene mvula yanyengo ikukweza kuchuluka kwa madzi, zidutswazo zimazungulira mobwerezabwereza pakati pa mitsinje ndi mitsinje yayikulu: m'mitsinje yaying'ono, mafunde oyenda pang'onopang'ono amalola mchere kusonkhana m'zigawo zokhuthala, zofanana; m'mitsinje yayikulu, kuyenda mofulumira kumadula njira zopyapyala, zopotoka m'mitsinje. Kuzungulira kumeneku kumapanga mitsempha yapadera—miyala yamitsinje ili ndi mitsempha yotakata, yofalikira mofanana ngati ukonde wa akangaude, pomwe miyala yamitsinje yayikulu ili ndi mitsempha yopyapyala, yopotoka ngati ulusi wopindika, zomwe zimapangitsa Mwala uliwonse wa Yuhua kukhala "buku" lachilengedwe la kuyenda kwake mobwerezabwereza pakati pa magawo osiyanasiyana a mtsinje.

Makhalidwe akuluakulu a Yuhua Stone ndi monga mapangidwe osiyanasiyana a mitsempha, kapangidwe kosalala ngati silika ndi mawonekedwe olimba achilengedwe omwe ali ndi zizindikiro zooneka bwino za kukokoloka kwa madzi achilengedwe—makhalidwe omwe amawasiyanitsa ndi miyala yokongoletsera yopangidwa. Mitsempha imakhala ndi mitundu yosiyanasiyana, yosabwerezabwereza: ina imafanana ndi mitsempha yofewa ya masamba yomwe imafalikira kunja kuchokera ku "tsinde" lapakati kupita ku m'mphepete mwa miyala, ina ngati mikwingwirima yamtambo yozungulira pang'onopang'ono pamwamba ngati kuti yazizira ikuyenda, ina ngati mame obalalika kapena maluwa ang'onoang'ono osonkhana pakona imodzi, ndipo ina imapanga mawonekedwe ofooka, osawoneka bwino omwe amakopa mapiri akutali kapena mitsinje yoyenda. Mitundu imasakanikirana kuyambira kuwala mpaka mdima m'mitundu yosalala yopanda malire akuthwa—feldspar yofiirira ya pinki imafota kukhala minyanga, kenako imasanduka honey amber iron oxide, ndikupanga mitundu yogwirizana. Kwa zaka makumi ambiri kupukuta mitsinje kosalekeza kumachotsa m'mphepete zonse zokwawa ndi ngodya zakuthwa, kusiya pamwamba pa Yuhua Stone kukhala yosalala kwambiri kotero kuti zala zimayendayenda pamwamba pake ngati kutsetsereka pa silika wopukutidwa; imamva kuzizira komanso kutsitsimula ikakhudzidwa m'chilimwe chotentha, osati yozizira ngati chitsulo, pomwe imasunga kutentha pang'ono, kotonthoza m'nyengo yozizira chifukwa cha kapangidwe kake ka mchere komwe kamasunga kutentha kwa nthawi yayitali kuposa matabwa. Ikayang'anizana ndi kuwala kwachilengedwe, imatulutsa kuwala kofewa kosaoneka bwino komwe sikuwala: kuwala kwa dzuwa kwa m'mawa kumadutsa m'mawindo kuti kuwonetse kuya kwa mitsempha, nyali yamadzulo imatulutsa kuwala kofunda komwe kumapangitsa kuti pamwamba pake pakhale kuwala pang'ono, ndipo ngakhale pamasiku a mitambo, imasunga kuwala chete. Maonekedwe amasiyana malinga ndi mphamvu ya madzi: miyala yaying'ono, yozungulira (yofanana ndi kukula kwa mabulo kapena ziboda zazing'ono) imachokera ku magawo akuluakulu a mitsinje yogwedezeka komwe mphamvu yamphamvu imaizungulira bwino, pomwe miyala yayikulu, yosalala kapena yopindika pang'ono (yofanana ndi kukula kwa kanjedza kapena mbale zazing'ono) imapanga m'mitsinje yofatsa komwe kuthamanga kwa madzi pang'onopang'ono kumawapanga pang'onopang'ono. Miyala yonse ya Yuhua imakhala yolimba mwachilengedwe—imakana kuwonongeka kwa tsiku ndi tsiku chifukwa choigwira, imapirira kutentha kwambiri (mpaka madigiri mazana ambiri pafupi ndi moto waukulu popanda kusweka) ndipo imapirira nyengo yakunja monga mvula, chipale chofewa ndi kuwala kwa UV komwe kumazimitsa zinthu zopangira.

Malo okongoletsera malo amoto akunja amalemekeza kwambiri Yuhua Stone chifukwa cha kukana kutentha, kukongola kwachilengedwe komanso kugwiritsa ntchito bwino zinthu, zomwe zimapangitsa kuti ikhale yokongoletsera yofunika kwambiri m'malo amoto a patio omwe amasunga chitetezo ndi kukongola. Imagwiritsidwa ntchito kwambiri m'malo osiyanasiyana amoto a patio, kuyambira m'malo ang'onoang'ono oyaka moto kumbuyo mpaka m'malo akuluakulu osonkhanira patio. Miyala ya Yuhua yopyapyala, yokhuthala (pafupifupi masentimita awiri kapena atatu makulidwe, osankhidwa chifukwa cha kapangidwe kake kolimba ka mchere komwe kamalimbana ndi kutentha bwino) imayikidwa mosamala mozungulira malo amoto a patio ngati malire oteteza kutentha—chotchinga ichi sichimangoletsa kuwala koyaka kuti kusayatse udzu wouma wozungulira, madesiki amatabwa kapena makapeti akunja (ubwino wofunikira pachitetezo kuposa miyala yotayirira), komanso mitsempha yawo yokongola imapanganso kusiyana kwakukulu ndi zitsulo zakuda ndi zomera zobiriwira za patio, kuwonjezera zigawo zowoneka bwino zomwe sizili m'malire a konkire wofiyira. Miyala yapakatikati yokhala ndi maziko osalala, olimba (ofanana ndi kukula kwa mbale za chakudya chamadzulo, osankhidwa kuti azigawira kulemera kofanana) imayikidwa pambali pa mipando yamoto—kaya mipando yamatabwa, masofa akunja kapena mipando ya Adirondack—ngati matebulo othandiza am'mbali. Amakhala ndi zakumwa zosavuta (monga makapu a mowa wozizira, makapu otentha a koko kapena magalasi a tiyi ozizira), zokhwasula-khwasula (monga mbale za mtedza, matumba a marshmallows okazinga kapena mbale za makeke) kapena zida zoyatsira moto (monga machesi osalowa madzi, ma fire poker ang'onoang'ono kapena zoyatsira moto zodzaza ndi lint).

Pamwamba pake posalala ndi posavuta kupukuta mutagwiritsa ntchito—ngakhale phulusa, zotsalira za marshmallow kapena madontho a zakumwa zomwe zatayika zimatha kuchotsedwa ndi nsalu yonyowa m'masekondi ochepa, palibe chotsukira cholimba chomwe chikufunika. Eni nyumba ena amapititsa patsogolo zokongoletsera poika miyala yamitundu yosiyanasiyana (kuyambira yaying'ono mpaka yayikulu ya kanjedza) kuti apange zotchingira zokongoletsa zochepa, zosazolowereka kuzungulira malo amoto—zotchingira izi zimalekanitsa malo oyaka moto ndi malo odyera pakhonde kapena obzala mbewu, zimapangitsa malowo kukhala ofewa komanso amapereka malo owonjezera okhala alendo pamisonkhano yayikulu. Kukana kutentha kwa Yuhua Stone kumapangitsa kuti isasweke, isweke kapena kufota ngakhale itakumana ndi kutentha kwa moto ndi kuzizira mobwerezabwereza. Kapangidwe kake kokhuthala ka mchere kamathandizanso kuti mvula isagwe—pambuyo pa mvula, miyala imauma mwachangu ndikusunga mitundu yake yoyambirira, pomwe moss imatha kukula pang'onopang'ono m'ming'alu pakati pawo pakapita nthawi, kusakanikirana kwambiri ndi malo akunja. Kaya imagwiritsidwa ntchito ngati chitetezo, ntchito kapena kukongoletsa, Yuhua Stone imasintha malo wamba amoto kukhala malo ofunda, okongola omwe amamva kuti akugwirizana ndi chilengedwe.