“亲”is the most popular term of endearment across Chinese social media. Its closest approximation in English slang words is “bae.”“亲”is the most popular term of endearment

How do Chinese call each other?

In my situation,in classroom we call classmate by full name(surname given name)(very unpolite if in workplace),but if you want to be formal than you can use full name 同学(or 先生 /经理/主任 ..in workplace)Mainly in China you can also address somebody as 小surname(如：小王，小李) rather informally As if you say address each other(

What does mumu mean in Japanese?

From Japanese 夢 (mu) meaning dream combined with 夢 (mu) meaning dream.