What's the use of Yulong in Yin Ruins?

It has archaeological value. China Post Group Corporation and the All-China Philatelic Federation issued 1 set of three special stamps of Yin Ruins. Jade Dragon in Yin Ruins was designed by Wang, a famous stamp designer in China, and printed by Henan Post and Telecommunications Printing Factory. The name of the stamp Yin Ruins first appeared in oracle calligraphy. Therefore, the Jade Dragon in Yin Ruins has extremely high archaeological value.