t Ning Hai coldly!Ning Hai's great aura did not speak, but his aura quickly weakened and became that of an ordinary person.His hair turned white instantly, like that of an elderly man on the verge of... quite a few books on a bookshelf in the corner!Chen Ping stepped forward and took a look, instantly astonished. It turned out that all these books were various manuals of martial arts techniques!And...