The most basic business income of securities companies is trading commission, which is still the main source of income for Chinese mainland securities firms at present, generally accounting for more than 9% of the income of each company.

Secondly, securities companies can launch asset management business if they meet the requirements. Asset management is somewhat similar to the meaning of funds, that is, customers buy asset management products of securities companies and the securities companies operate the money. Securities companies can collect basic subscription fees and redemption fees from them, and if the performance reaches the level specified in the contract, they can draw performance rewards accordingly.

there is IB business, that is, securities companies introduce customers to futures companies, and futures companies will give securities companies rebates accordingly.

there is also investment banking, that is, underwriting and sponsorship, such as guiding a company to complete an IPO, or issuing additional shares, listing on the backdoor, and so on. All listed companies in these businesses have to pay corresponding remuneration to brokers.

there is also self-operated business, that is, securities companies use their legitimate funds to stock and buy bonds, and the profits generated are also the income of securities companies.

There is also margin trading. Simply speaking, a securities company lends money or shares to its customers, and then the customers return them with a certain interest. These interests are also the income of securities companies.

Then there is the financial consulting business, which is mainly aimed at companies.

that's about all the main things. But the brokerage business, that is, you said that collecting commissions is the most important source of income.