Ethan's agent, Amy Chan, was also an artist-she studied commercial design and worked for famed Hong Kong comic artist Tony Wong for a time. Chan recalls that Ethan's Onion Tou began as just an image. But an image by itself can't conquer the market; Onion Tou needed a narrative. Chan argues that it required vision to turn Onion Tou into a book.
本身學商業設計、且曾在香港著名漫畫家黃玉郎旗下工作的詹嘉慧就表示，Ethan 所畫的洋蔥頭，一開始只是一個圖像，但如果要擴展商業市場，就不能「一招打天下」，需要有說故事的能力作為後盾，而要從圖像延伸出一本書，還必須有世界觀。