Phoenix nirvana is a legend in the Arab kingdom. The phoenix in the phoenix nirvana is not a phoenix in the traditional sense of China, but a fire phoenix, a mythical immortal firebird. It is said that the phoenix burns itself to ashes every 500 years, and then reborn from the ashes, circulating endlessly and becoming eternal life. Extended meaning: Phoenix is the messenger of world happiness. Every five hundred years, it will bear all the unhappiness and hatred accumulated in the world, throw itself into a raging fire, set itself on fire, and exchange the end and beauty of life for peace and happiness on earth. It is also after the body has experienced great pain and tempering that they can be reborn with a better body.

Diligence and perseverance in writing are a word used in ancient Chinese. The original meaning is to grind on a grindstone, which means to sharpen the knife. Endeavour means going through tempering, overcoming difficulties and making continuous progress. Also known as "Endeavour".