薄肌精牛粗壮持久40分钟

Regarding Ji Feng's doubts, Zhinao has his own explanation: Master, if you learn with reference to physical objects, the speed will indeed be very fast, but in that case, the master's mastery of this knowledge will never be too deep. What Zhinao does now is to let the owner remember this knowledge first, and then refer to the actual object when learning it for the second time....