Yida sugar-free chewing gum entered the China market in 1996. In recent years, its micro-film advertisement, the series of sweet and sour sweets and bitters, has been widely circulated in major media and deeply loved by the audience.

Microfilm advertisements are divided into two parts, one is a love series starring popular idols Kwai Lun Mei and Eddie Peng Yuyan, which is divided into two parts. Through five short stories with the theme of sour, sweet, spicy and bitter in the beautiful journey after they met in the vast desert, and a series of stories of meeting again in the next part, the wonderful love full of real life is described. Yida is interspersed in every short story, among which the two advertising words "Brother, full" and "Your Yida is full" are deeply rooted in people's hearts. They not only show the love of the hero and heroine for Yida, but also are a main line to draw their beautiful love. At the end of the advertisement, it is supplemented by the conclusion of "Eat and chew" and "Care for your teeth and care more about you-Yida sugar-free chewing gum". The other is a dream series starring movie stars Bai Baihe and Guo Xiaodong. It describes the bittersweet course of Bai Baihe, a girl, learning from Guo Xiaodong, a chef. The theme of the series of short films is to pursue your dreams with a down-to-earth attitude and stick to the end, which makes people think. Similarly, Yida, a small package, is interspersed among them, and the focus of the advertisement is on "eating and chewing Yida" and "caring for teeth".