What is margin trading?

After the same underlying securities are used for financing purchase and short selling, the securities purchased by financing are used to repay the short selling liabilities. The funds sold by short selling (only used for securities purchase and withdrawal before short selling liabilities) can be used to pay for allotment, subscription of new shares, purchase of non-target securities, etc. If the guarantee rate remains high enough, it is even desirable. Different securities companies may have different understandings of the rules due to different software.