What does it mean to become a shareholder in Jinjiang?

Buying stocks means betting on stocks, which is the kind of CP that has been uncertain, the protagonist flirts everywhere and then buys stocks.

The last cp in the stock buying article needs readers to guess that the protagonist in the article will have multiple love lines, for example, one may entangle several attacks at the same time. So buying stocks is a metaphor for guessing the final cp. If you lose, you guess wrong.