What is the abbreviation btn? Love between light and night?

The meaning is as follows:

The abbreviation of btn in the game of love between light and night is English button, which translates to the meaning of button. This is a topic in the game's answering method. Just know it.

Introduction:

Love between Light and Night is a highly immersive interactive love mobile game, which brings together top CV, palace-level composers, super-first-line painters and luxury screenwriters at home and abroad to create a unique real love atmosphere. Multi-line plot and fate choice bring you a brand-new interactive experience of high immersion love.

On June 24th, 221, the mobile game "Love between Light and Night" was released for public beta. The heroine is the role played by the player, and there is no official name. Players can customize the name and dress of the heroine to be displayed in the game.