Announcement: 19-year mission. If you change your mind, post the code of the first world before posting it. If you find that the author has not been able to publish the article after a month, it is definitely not because the author is lazy, but because the article is slow to post. . This is the story of an unscrupulous scumbag who was forced to bend. This is a story that tells us never to play with emotions. -
Purpose: Quick travel to save the imagination