Training to improve finger strength, getting better at lock-offs, and even back-stepping (the single most useful technique in all of climbing!
增强指力，更有力的锁住支点，甚至是转身（唯一一个最有用的攀爬技巧！）
2
Qing Code: two fingers simultaneously pressing the new remote unlock, lock, when the lights flash, release a finger, another finger to continue pressing.