It's best to change yen directly. Although the yen is relatively high now, it is better to change it into RMB!

There are many big stores that can directly settle accounts with UnionPay cards. For example, YODOBASI does not have such a high exchange point, which is not cost-effective! It is better to use cash directly ~ ~

It depends on what you are going to buy. Buy more things, change more, and bring UnionPay cards. Basically, UnionPay cards can be used in major electrical appliance stores in Japan, so you can be prepared even if the cash is not enough!

Of course, UnionPay cards also need to be converted into foreign exchange quotations.