Heavenly Sovereign
Heavenly Sovereign was the first Chinese legendary king after Pangu’s era. According to Yiwen Leiju, he was the first of the Three Sovereigns.Biography
According to the Records of the Grand Historian by Sima Qian,
His greatest achievement was suppressing all the chaos, divided the world to many tribes with choosing the best person to rule his tribe.
His successor was Earthly Sovereign.