References:

Duhalde, M. et al. (2019, November 8). Cantonese Performing Art. South China Morning Post. Retrieved from https://multimedia.scmp.com/infographics/culture/article/3036661/cantonese-opera/index.html
Feng, J. (2020, January 16). Decoding Peking Opera Headwear. China Today. Retrieved from http://www.chinatoday.com.cn/ctenglish/2018/ich/202001/t20200116_800190063.html

iOpera. (2010, October 1). Costumes- Toukui, the Headdress. Retrieved from https://iopera.wordpress.com/2010/10/01/costumes-toukui-the-headdress/

The Origins of Cantonese Opera. (N.d.). Retrieved from http://www.cityu.edu.hk/lib/about/event/cantonese_opera/origins.htm#:~:text=Cantonese%20opera%20is%20also%20known,1566

Wickham, R. (N.d.). Makeup, Staging, Costumes and Music. Retrieved from https://www.google.com.sg/amp/s/www.chinaeducationaltours.com/guide/culture-peking-opera-staging-music-costumes.htm