加拿大pc算法简介：Qin Fen did not take the time to appreciate these things, but swam upwards. Soon he swam out of the water, only to find that he actually appeared in an artificial lake in an underground city.
Qin Fen did not take the time to appreciate these things, but swam upwards. Soon he swam out of the water, only to find that he actually appeared in an artificial lake in an underground city.
