It is very difficult for a jindan to generate a jindan fire. There is no way to use elemental energy according to the prescribed order. But giving birth to a jindan fire requires the jindan's energy to become extremely thick and then compress it. Hong Jun knows that the path of Xiuzhen is actually similar to the form of stars in the outer space. When stars are formed from the initial collision of various substances, they will compress them until their quality is maximized and eventually become fixed stars.
This is the case with the jindan as well. The jindan's internal energy has yet to generate any visible jindan fire. Therefore, other than making the jindan's elemental energy compress to its maximum limit, there is no other way. Of course, Hong Jun has just formed a jindan for a few mon
