Xu Ziyin (徐紫茵), most known by her stage name Roada Xu, is a Chinese artist under T Entertainment.
- Stage Name: Roada Xu
- Legal Name: Xu Ziyin (徐紫茵; 쉬쯔인)
- Birth Name: Luo Ruihua (罗瑞华)
- Birthdate: May 6, 1996
- Birthplace: Xiamen, Fujian, China
- Height: 168.8cm
- Weight: 48kg
- Hobbies: Cooking, studying, makeup
- Specialties: Composing lyrics, music production, Korean, English
- [2021.02.19] IN
- [2020.07.03] Dài Wǒ Qù Yuèqiú (带我去月球; Take Me to the Moon)
- [2020.xx.xx] Chāo Shíkōng Liànrén OST Part 1
- [2020.12.30] My Gravity (Dì Xīn Yǐnlì) (地心引力)
- [2021.01.11] Cháo Táng Yǒu Yāo Qì (朝堂有妖氣)
- [2021.01.15] Hunger (È Yì) (with Oscar Wang) (饿意)
- [2020.10.23] Bàn Shì Mì Táng Bàn Shì Shāng OST (#3 "Say Yes")
- [2021.05.04] Liàn Liàn Xiǎo Jiǔwō OST (#5 "Love Letter")
-  Song of Youth (as Li Haiyan)
-  Da Song Shao Nian Zhi (as Xiao Hua)
-  The Next Top Bang (Contestant)
-  Youth With You 2 (Contestant; as Roada Xu)
-  GodLie (Guest)
-  Music Public Class (Guest)
-  Girls Planet 999 (Contestant)
- She qualified to be a trainee in several South Korean entertainment companies, but never signed any contracts due to her studies (Qualified in 2008 for JYP, 2011 for SM, and 2013 for CUBE).
- She placed first in her specialized course when she graduated Beijing Film Academy in 2018.
- She finished in 19th place on Youth With You 2.