The origin of knife-edge licking blood can be traced back to the ancient history of China. At that time, many martial artists would fight in the Rocky Mountains and forests to test their kung fu, and licking blood with a knife edge was one of the ways to show their bravery. Over time, this behavior is also regarded as one of the symbols of martial artists. However, in today's society, this practice has not been preserved.
Although the act of licking blood with a knife edge is no longer advocated by us, the courage and firmness it represents are still respected by people. What we need is courage and firm spirit in difficulties and crises, which can make us cheer up from failure, face setbacks and persevere. Therefore, we can draw spiritual strength from the blood licking at the knife edge as the support for us to meet difficulties and challenges.