buy call stock how to understand, in chinese

 看涨期权 (Call Option) means buying the right to purchase a stock at a set price later, which is translated as 买入看涨期权 or Buy Call in stock trading.

What is a Buy Call?

Definition: A call option (看涨期权) gives you the right, but not the obligation, to buy a stock at a set price (行权价 / Strike Price) before a set date (到期日 / Expiration Date).
Cost: You pay a price called 权利金 (Premium) to buy this contract.
Goal: You profit if the stock price goes higher than your strike price plus the premium you paid. If the stock falls or stays flat, the most you can lose is the premium cost.

Key Terms in Chinese

Call Option / 买权 / 看涨期权: The right to buy.
Put Option / 卖权 / 看跌期权: The right to sell.
Strike Price / 行权价 / 履约价: The agreed buying price.
Premium / 权利金: The cost of the option contract.
Expiration Date / 到期日: The last day to use the option.