Nyob rau hauv ancient sij hawm, dej tau siv los ua kom pom cov duab ntxoov ntxoo, thiab cov hlab ntsha uas muaj tooj liab tau siv los ua cov lus qhia. Hauv Han Dynasty, nws tau hloov npe Jian rau # Daim iav. Bronze mirrors tau nrov thaum lub sij hawm Han thiab Wei Dynasties, thiab muaj tag nrho-ntev daim iav. Thaum xub thawj, lub bronze # daim iav yog nyias, puag ncig nrog flanges, dai kom zoo nkauj nrog cov qauv los yog inscriptions nyob rau sab nraum qab, thiab ib tug semi-circular khawm nyob rau hauv nruab nrab ntawm lub nraub qaum los tuav lub # daim iav, tsis muaj ib tug kov, tsim lub cim style ntawm Suav #mirrors. Cov iav iav tau qhia nyob rau hauv Ming Dynasty, thiab iav sab nraub qaum # iav maj mam nrov. Nyiv thiab North Kauslim thawj zaug qhia bronze #mirrors los ntawm Tuam Tshoj. Iav #mirrors tau nrov hauv Nyiv thaum lub sijhawm Meiji Restoration.
Nqe lus piav qhia:
-Siv E1 high-density board khoom, noj qab haus huv thiab ib puag ncig tus phooj ywg, muaj zog bearing peev xwm
-Tus naj npawb ntawm cov compartments sib haum mus rau nuv sawb ntawm cov khoom yog txo los ntawm ob, thiab tus neeg siv-phooj ywg tsim yog yooj yim dua los kaw lub qhov rooj
-Lub pob ntseg thav duab yog ua los ntawm stainless hlau hlau tuav
-Cov chav tsev ntawm lub txee lub cev tau nce ntxiv kom khaws cov khoom siab dua me ntsis thiab nce qhov chaw cia