Fufufufufufufufu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fu Fufufufufufufufu Fu Fu Fu Fufufufufufufufufufu Fu Fu Fufufufufufufufufufu Modification: texasaustin modified this article on Jan 20 18:27:06 [FROM: 10.64.11.20] Source: Sun and Moon Guanghua Station bbs.fudan.edu.cn [FROM: 10.64.11.10] � bitter sweet � In the closed tubular space of human society, the beginning of a life is the period in the center of the tube. The piston is given a horizontal initial velocity and keeps running back and forth between the two extremes of bitterness and sweetness. Once you get too close to one end, you will be pushed to the other end texasaustin Modification: texasaustin modified this article on Jan 20 18:27:06 [FROM: 10.64.11.20] Source: Sun and Moon Guanghua Station bbs.fudan.edu.cn [FROM: 10.64.11.10]