In Nanyang, Henan, there is no exact and authoritative appraisal institution that can provide the dating of jewelry and jade. Personally, I suggest being cautious and not spending money on it.

However, in Zhengzhou City, Henan Province, there is an official organization that can provide this kind of appraisal. Henan Provincial Museum, located in the middle section of Nongye Road in Zhengzhou City, is a comprehensive service building, which can provide paid appraisal services, but an appointment is required. The specific charging standard is not clear, so the landlord can learn about it when he has the opportunity.