Both bullish and bearish are from the cognitive perspective of option buyers. If the market rises, then the direction of the buyer of the corresponding call option is also judged correctly, and the buyer's income of the call option will also increase; In layman's terms, it is "the more buyers earn, the more sellers fall"; On the other hand, an option is a put option if it follows the principle that the seller makes more money when it falls and loses more when it falls.

The following figure can illustrate four groups of operations: call option, call option, put option and put option: