2, Wan Yongsheng jewelry gold inlaid with jade is true, but things are very general. Hetian jade is real, and so is 24k pure gold. Don't think gold inlaid jade is expensive, and don't spend money on gold inlaid jade.
3. Really. According to Baidu Encyclopedia, Wanyongsheng Jewelry refers to the jewelry of Wanyongsheng brand under Huainan Runlong Jewelry Co., Ltd. It is very common to use jewelry coupons, which is a common means of jewelry promotion, and it is true.