On a business trip during the Spring Festival, how does the boss ask him when he will come back?

You can send a greeting to your boss during the Spring Festival and ask him directly when he will come back after he replies.

Spring Festival, the China Lunar New Year, is commonly known as Spring Festival, New Year and New Year's Eve. It is also called "New Year" and "New Year's Eve". It is a folk festival integrating the old with the new, offering sacrifices to gods and ancestors, praying for evil spirits, reuniting relatives and friends, celebrating entertainment and drinking.