Why do some people say that "China Merchants Bank is a daughter"? (⊙o⊙？ ) I don't understand.

This is a joke circulating on the Internet. Giving birth to a son is like building a bank, which means "building". It means that after giving birth to a son, you have to work hard to prepare for his future, and it costs a lot of money to get a wife (buying a house and a wedding banquet are usually given by the man). Having a daughter is like China Merchants Bank, which means "attracting investment", which means that after having a daughter, you can recruit a son-in-law for yourself. Naturally, the son-in-law will send money to your daughter. The so-called twins are Lehman Brothers, which means that twins have to work harder to make money for the expenses of their two children, otherwise they will go bankrupt like Lehman Brothers in the United States.