What bank card is the most convenient for traveling to Japan?

UnionPay cards can be used in any bank in China, preferably VISA or MasterCard! ! Basic shopping malls are ok, but small shops are not. Most small shops use the JCB card of China Bank. It is suggested that it is best to exchange it at the Bank of China, or take the UnionPay card to Japan, and find a bigger sumitomo mitsui banking corporation or 7- 1 1 convenience store to find an ATM to withdraw cash. It is displayed in Chinese, and the Ginza one is absolutely acceptable. One card can get about140,000 yen a day.