Throughout the ages, one Cong Jade is to glimpse the state of true Qi, which we call Peeping; the second Cong Jade is to recognize the state of True Qi, which is called recognition; the third Cong Jade is to enable; the fourth Cong Jade is to realize; and the fifth Cong Jade is to seek from the outside; the six Cong Jade is to ask oneself; the seventh Cong Jade is to be right; the eight Cong Jade is to observe the heaven and earth; as for the latter, it is still unknown.
Legend has it that Huangdi Xuanyuan is the only genius who can reach the nine-cong jade. As for the unreachable ten-cong jade, who will be in the future?