1. The cancellation of Deng Zhong account refers to the cancellation of securities account in China Securities Depository and Clearing Co., Ltd., after which securities trading cannot be conducted. If you want to buy securities again, you must open an account again.

2. Securities refer to all kinds of economic rights and interests certificates, and also refer to a special product, which is a legal document used to prove that the holder enjoys certain rights and interests.

3. Securities mainly include capital security, currency securities and commodity securities. In a narrow sense, securities mainly refer to securities products in the securities market, including property market products such as stocks, debt market products such as bonds, and derivative market products such as stock futures, options and interest rate futures.