36Kr learned that the three major A-share indices collectively rose during the midday break, with the Shanghai Composite Index up 0.67%, the Shenzhen Component Index up 0.6%, reaching a new high in over four years, and the ChiNext Index up 0.04%; the optical fiber concept surged, with TDii and HYC hitting the daily limit; the cultivated diamond concept strengthened, with LILIANG DIAMOND rising over 8% and Huifeng Diamond rising nearly 5%; lithium battery stocks fell, with Lanxiao Technology down over 10% and CATL down nearly 4%
