China’s most-populous city Shanghai has plunged its people into a historic half-half lockdown, starting with all districts east of the Huangpu River to be followed by similar measures for all areas west. Post reporter Holly Chik speaks with Shanghai bureau chief Daniel Ren from lockdown about how residents are coping, and to explore the economic impact on the finance and manufacturing base. Video journalist Thomas Yau is on the other side of the river, where there is panic buying and rising…