Li Ning's speed of sound is 9. Does Li Ning Sonic 9 have the latest development of Li Ning? Technology, buffering capacity and elasticity are all good. cj 1 still uses cj's old technology, so Li Ning 9 has a good sound speed.
2. Compared with cj 1, Li Ning Sonic 9 is cost-effective and can meet the consumption power of different consumers, so Li Ning Sonic 9 is good.