I can still play Tencent's games, such as cf, Antai, for a penny, but why do many people say that Tencent's games can't be played without charge?

Because most of Tencent's games are filled with money, this can obviously improve the combat effectiveness and then defeat the opponent. On the other hand, the opponent won when he saw that the enemy had charged some money, and then he also charged some money, and so on. The player who did not charge money had obvious faults and could not beat the advanced player.