Artificial intelligence demand and technological domestic substitution drove profit growth for Chinese listed companies to its fastest pace in four years in the first half, underscoring the nation’s K-shaped economy as it transitions away from credit-fuelled expansion.Profit for firms on the chip-heavy Star Market under the Shanghai Stock Exchange surged more than fourfold from a year earlier in the six months to June, while those on the similarly structured ChiNext board in Shenzhen rose 33...