Also known as summary and content summary, it means to extract or extract the main points. Mudanjiang, also known as "Snow City", is a prefecture-level city under the jurisdiction of People's Republic of China (PRC) and Heilongjiang Province, located in the southeast of Heilongjiang Province. Opening an account means that investors (including individuals or units) establish business relationships such as savings and credit with banks, and open securities accounts and capital accounts. There are many kinds of account opening, such as futures account, stock market account opening and foreign exchange account opening. So opening an account in Mudanjiang means: pay attention to the accounts opened by banks and other financial institutions (or customers in Mudanjiang) in Mudanjiang.