B. 1984, Hong Kong. Currently based in Hong Kong. Cheng Sum-ling, also known as Little Thunder, is a self-taught artist who was born and raised in Hong Kong. Heavily influenced by her father, who is an ink painter, she has cultivated her enthusiasm for painting since childhood. At the age of 8, she started drawing manga, and at that time, her sister was her only reader. She fully committed to the world of manga and illustration in 2001, and her works were serialized in a variety of magazines. She was awarded the Best New Artist at the China Japan Comics Exchange in the same year.

In 2006, she published her first manga and art book and began drawing the trilogy KYLOOE the following year. The trilogy was completed and published in 2012. It has been translated into Chinese, French, and Italian. KYLOOE 1 – Downhearted Dragonfly received the Bronze Award in the 4th International Manga Award. Her debut solo exhibition, "CONFESSION," was held in Hong Kong in 2012, and she began to explore various forms of artistic presentation.