The reason why Qidu Bird is unknown is that it has an unknown secret identity. According to legend, 500 years ago, there was an auspicious bird, which lit incense wood and then rose from the ashes. It is beautiful and never dies. It is called the immortal bird, the phoenix. Legend has it that in the process of nirvana, the phoenix's body has been severely baptized by fire, but its soul has gone through many hardships to break away from the shackles of three-dimensional space, cross four-dimensional space and finally fly freely in this seven-dimensional space. The purity of a brand is the floorboard of two parallel spaces, symbolizing a broad ideological realm. The seven-degree bird is a phoenix in nirvana, the source and carrier of success. Seven-degree bird is a lucky bird in seven-degree space, representing a group of young elites who have experienced hard creation, hard work and continuous growth until success. "