Worries over a sustained bond selloff in bled into the country’s stock on Thursday, dealing blue chips their worst one-day loss in nearly 18 months, as investors reacted to the government’s latest measures to reduce risks in the financial system.  The yield on Chinese 10-year treasury touched a three-year high of 4.03% on Thursday, traders said. The unease comes as the

government steps up its deleveraging campaign, most recently with measures aimed at curtailing micro-lending and imposing tighter regulation on asset management businesses. The blue-chip CSI300 index tumbled nearly 3% to 4,103.73 points, its biggest drop since June 13, 2016, while the Composite Index slid 2.3% to 3,352.99 in its worst day since December.  READ MORE