Your shooting hand should grip the butt of the cue stick in a loose, relaxed manner, with your thumb as a support and your index, middle, and ring fingers doing the gripping. Your wrist should point straight down to prevent it from moving sideways when you take your shot. Your shooting hand should generally grip the cue stick about 6 inches (15 cm) to the rear of the stick's balance point. If you're short, you may want to move your hand forward of this point; if you're tall, you may want to move it further back. This prevents the cue stick from moving sideways when you shoot. There are 3 main grips: the closed, the open, and the rail bridge. In a closed bridge, you wrap your index fingers around the cue and use your other fingers to steady your hand. This allows for more control over the stick, particularly with a forceful forward stroke. The cue will slide through and you will use your other fingers to keep the cue from moving sideways. The open bridge is better for softer shots and is preferred by players who have trouble making a closed bridge. A variation of the open bridge, is the elevated bridge, in which you raise your hand to lift the cue over an obstructing ball when striking the cue. Use the rail bridge when the cue ball is too close to the rail for you to slip your hand behind it. Lay your cue stick over the rail and keep its tip steady with your off hand. Line yourself up with the cue ball and the ball you want to hit. The foot corresponding to your shooting hand (right foot if you're right-handed, left foot if you're left-handed) should be touching this line at a 45-degree angle. Your other foot should be a comfortable distance away from it and forward of the foot matching your shooting hand. This depends on 3 things: your height, your reach, and the location of the cue ball. The further away the cue ball is from your side of the table, the longer you'll have to stretch. Most billiards games require you to keep at least 1 foot (0.3 m) on the floor when shooting. If you can't do so comfortably,...

TL;DR in Chinese:
正确握杆。 将你的手指放在杆尖周围形成一个支撑桥。 在开放的桥架中，用食指和拇指形成一个V型凹槽。 保持你的身体与击球点对齐。 站在一个舒适的距离。 击球时垂直定位自己。