权御天下 (Quán Yù Tiānxià)

Background
"Sun Quan the Emperor" is an original Luo Tianyi song that was featured in bilibili's New Year Gala and became extremely popular within 2 days since its release.

The song tells the story of the famous Three Kingdoms period in China and an epic for one of the emperors, Sun Quan (portrayed by Luo Tianyi). The Three Kingdoms consisted of Wei, Shu, and Wu.

Other VOCALOID and related characters appear in the PV: Hatsune Miku as Cao Cao, KAITO as Liu Bei, Yuezheng Ling as Zhou Yu, a derivative of the Kagamines as Lü Meng, YANHE as Zhang Shao, Kagamine Rin as Guan Yu, Kagamine Len as Zhang Fei, and Yuezheng Longya as Lu Su.

In March 2015, "Quán Yù Tiānxià" exceeded 100,000 views on bilibili. On April 13, 2015, the song reached 1 million views on bilibili and became Tianyi's first solo song to reach this number.

A short version of this song is also featured in the Playstation Vita and IOS game, Musync.

This song was featured in the compilation album Diàntáng 3.

Controversy
"Sun Quan the Emperor" was accused of plagiarizing Mekakucity Actors' theme song, "daze", and various other works (such as a sentence from Cao Cao by JJ Lin and the drums from "刀马红颜" ("Dāo Mǎ Hóngyán"). The producers of "Sun Quan the Emperor" noted that they never heard of "daze" or any of the other Kagerou Project songs though Wugui was seen adding these songs to his playlist on bilibili in the past. This later lead to fans uploading comparison videos of "daze" and "Sun Quan the Emperor" only to be censored afterwards.

Concerts
This song was featured in the Vsinger Live concert.