Tianbao Longfeng jewelry has never been heard of before. It should be a regional brand. Lao Fengxiang is indeed a well-known time-honored brand. As for the purity of gold, you can look at the label of each product or consult the clerk. Generally speaking, there will be no problem. Gold jewelry should be integrated with the quality, workmanship, style and price of jewelry. Well-known brands are not necessarily good, you can ask more questions, but generally speaking, brands are also a guarantee! Good luck!