What other factors will affect the price of stocks without trading volume (trading volume is 0: assuming)?

To be sure, assuming that the trading volume is always zero, the stock price will never change. That's for sure.

No other favorable factors can change the stock price, because no one trades, and the stock price will never change. Although ex-dividend can change the stock price, it also needs to deduct an equal part from the stock price, so it can also be understood as the stock price remains unchanged. What you say is like retail goods, which are reduced in price if no one buys them, which is even more unreasonable. This will never happen. If so, who dares to buy stocks?

Therefore, nothing can change the stock price. The only thing that changes the stock price is the volume, and the stock price is changed by everyone's transaction. Buying stocks is called "stock trading", which is the reason. Everyone buys and sells each other and speculates with each other, so that the stock price can be "speculated" high and "speculated" low.

Just download a stock software and have a look. When the stock price rises, you will find that the consignment orders will be "eaten" one by one, that is, active buying, also known as external selling; When the stock price falls, you will find that the orders are being "eaten" one by one, that is, active selling, also known as internal selling.