Xuan-Yuan Sword: The Gate of Firmament

Xuan-Yuan Sword (Chinese: 軒轅劍, literally "Sword of the Xuan-Yuan") is a long-running historical fantasy role-playing video game series developed for personal computers by the DOMO Studio (DOMO小組/多魔小組) of the Taiwanese game developer Softstar Entertainment. The games incorporate heavily elements of Chinese mythology, and is one of the so-called "Twin Swords of Softstar" (大宇雙劍) along with The Legend of Sword and Fairy, a sister fantasy RPG series also developed by Softstar. In time immemorial, the titular Xuan-Yuan Sword was wielded by Yellow Emperor to defend Ancient China against the warlord Chi You and his aggressive subjects.