36Kr learned that the three major indices of A-shares closed mixed at noon, with the Shanghai Composite Index down 0.45%, the Shenzhen Component Index down 0.21%, and the ChiNext Index up 0.12%; the robotics concept surged, with KING EXPLORER hitting the limit up, Greenland Harmonic rising over 9%, and ESTUN AUTOMATION rising over 8%; retail stocks rallied, with LYFEN performing a ceiling limit, and Yonghui Superstores and Zhongbai Group rising over 4%; the semiconductor and home appliance sectors led the decline, with Cambricon falling over 7% and Haier Smart Home down over 3%