In 2000, a chance, get a few late Longshan Culture and the early Shang Dynasty jade, I started to concentrate on detailed research jade.
2000年，一个偶然的机会，得到几块龙山文化晚期及商代早期古玉后，便开始专心细研古玉。
Jade cicada was first appeared during Hongshan culture and Liangzhu culture. But cicada design carved on the bronzes was first appeared in Shang dynasty.
早在红山文化、良渚文化时期就已出现了玉蝉，而蝉纹最早出现在青铜器上是在商代。
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