The first mention of the tea from the Phoenix mountain dates back to the 13th century. One of the Chinese rulers named Zhao Bin was hiding from his pursuers near Mount Phoenix. Unfortunately, he fell sick, and the peasants, upon learning of this, prepared for Zhao Bin a curative drink from the leaves of tea bushes growing in these places. When the ruler tasted this drink, he immediately felt better. According to the legend, this particular oolong variety was prepared specially as a gift for one emperor from the Song dynasty, and later, the tea harvested from these bushes, was supplied only to the imperial court.

The uniqueness of dang cong is that of more than ten officially recognized flavors, none is repeated, even though all these varieties are manufactured in the same way. Song Zhong is one of the few varieties which original bush still exists, today it is nearly 800 years old. For sure, the tea obtained from this bush does not even fall on the shelves of stores - it is bought into the collection even before the final stage of processing is completed.