What's the name of the empty compass in the small space of 60 Jialong Song?

As shown below, some compasses are blank, and some are marked with the word "positive", which means empty death.

However, in the sky, there is Ding Gengxin as jewelry, if not, it is a unique dragon.

And Kun Renyi's returning to the liver is the five-legged dragon.

As for the truth, this is the same as the principle that the site distributes gold. For example, if you are dry and the yang is pure, there is no yin, so there is no distribution of gold. Similarly, the dragon is the only dragon, others are lonely and empty, or yin and yang are not harmonious, so only Ding Gengxin is available.