Because Yulin tea brewing is all manual operation, the production is complex and the process requirements are high, so it is difficult to produce on a large scale. After liberation, due to the development of food industry, there are many kinds of food, good quality and low price, and the status of tea bubble has declined rapidly. In the 1980s, only a few old workers continued to produce in small batches. City Candy & Biscuit Factory inherits the traditional technology, simplifies the working procedure, and replaces manual tanning with mechanical molds. Before the Spring Festival every year, it will produce a batch of "Yulin Tea Bubbles" and put them on the market.