Ring-Making Workshop

my partner and i will be visiting shanghai on the 21st of may to 23rd may before going to nanjing until 29th may. we're getting married soon and we wanted to make our wedding rings instead of buying from shops. i tried to search but couldn't really find recent. please help me to recommend some places we could go to make them! sorry for the troubles and thank you in advance to those that will reply to this thread🙏🏼🙏🏼