Use the compass to determine the consumption dragon, the mother dragon and the entrance dragon.

The location and direction of molten gas entering caves in Long Mai are thousands of miles long. When the hole is about to be sealed, the gas is pumped through the canyon first, and the mountain suddenly rises, ready to seal the hole. In Long Mai, this situation is called "entering the first place". Ge Lailong, at the gorge beam behind Dong Xing, measure the dragon on the top of Longshan Mountain with the station on the compass. Ge Jinlong used a compass to find out where the ins and outs were. As the saying goes, "a thousand miles is always empty, and in the end it is the real dragon." Parent Mountain is a mountain near the cave. When the parent mountain appears, it means that it is about to knot. When Parent Mountain is about to knot, it will cross the canyon and start to knot again. Get off the compass at the point where Acupoint Star passes through the canyon, look in the direction of Acupoint Star, look at the top of Acupoint Star (the point of pulse entry), see what is on the compass, and make sure it is a one-stop train.