What happened to my tennis racket?

Run the line because you use a soft line, and the net line can be divided into soft line and hard line. Hard line basically won't run the line, but it will run a little after a long time. Flexible cord is more suitable for beginners.

The flexible cord is well controlled, with little vibration and arm protection, but the power is average. Hard-line power is good, the ball speed is fast, but the vibration is big, which is difficult for beginners to control. Honey, give me the best.