Hellow guys, Welcome to my website, and you are watching 010.기초주산(보수 있는 운주법)#abacus. and this vIdeo is uploaded by 셈쌤의 주산과 교과연산 at 2021-10-09T01:25:13-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
