改名后回鄉證同銀行手續的問題？

1. Usually within days (as the deed needs to be verified). You will have to discuss with your employer and the bank for detail.

2. In theory, no. As soon as you have changed your name, your old name is invalid.

It costs you less than $200.

身份證改了，回鄉證肯定也要改，都不同名了。
銀行轉返新名一個星期到半個月左右吧。