In addition, there is a more interesting explanation for the existence of the air and sea, that is, in folk beliefs, the time period regarded as the existence of ghosts is also called the "air-stone sea". Ghosts are particularly active during this period, so local people will perform various exorcism ceremonies at this time. In this explanation, nothingness refers to the space or boundary between man and ghost in this period, which is balanced by Yin and Yang.
Similarly, air and sea have their unique meanings in Wushu. In the eyes of Jianghu chivalrous people or martial artists, "air and empty sea" is usually used to describe how to disguise one's true skills by changing one's body shape between moves. For example, while attacking the enemy, the skill of moves becomes defense, which easily makes the opponent fall into a misunderstanding, thus causing unnecessary interference. Therefore, the empty sea can also be regarded as a kind of "empty" lure in martial arts to confuse the enemy and protect themselves.