Core Viewpoint - The A-share market experienced a pullback after an initial surge, with the ChiNext index rising over 3% at one point, driven by significant gains in the cultivated diamond sector [2] Industry Summary - The cultivated diamond concept saw substantial gains in the afternoon, with several stocks hitting their daily limit, including Huifeng Diamond and Sifangda, both reaching a 20% increase, while Huanghe Xuanfeng and Hengsheng Energy also hit the limit up [2] - The superhard materials sector is expected to undergo consolidation due to export restrictions, which may lead to price fluctuations in the future. The functional applications of synthetic diamonds are anticipated to continue driving investment opportunities in this sector [2]