Tiger Securities' simulated account is not a loan. Tiger Securities is an online brokerage company that provides trading services for financial products such as stocks, options, futures, foreign exchange and bonds. Its simulated account is a virtual trading environment, which aims to provide a platform for novice investors to be familiar with the financial market and understand the trading rules and skills.

In the simulated account, investors can use virtual funds for trading. These virtual funds are not physical assets, so they cannot be used as loans. By simulating accounts, investors can practice trading strategies, get familiar with trading processes and improve their investment skills without risk.

It should be noted that although simulated accounts can help investors accumulate experience and skills, they cannot fully reflect the fluctuations and conditions of the real market. Before making a real investment, investors need to conduct in-depth research and analysis of the market in order to make wise decisions when investing.