Chang 'an Jiafu Jewelry Store. According to the inquiry of treasure in Chang 'an Town, we know that the gold jewelry in Chang 'an Jiafu Jewelry Store is good. Chang 'an Town, which belongs to Dongguan City, Guangdong Province, is located at the southern end of Dongguan City, bordering Shenzhen City in the east, the Pearl River Estuary in the south, Humen Port and marina bay New District in the west. It is the hometown of revolutionary pioneer Dr. Sun Yat-sen.