SHANGHAI — In the hours before her building went into lockdown on April 1, Ye Qiwei did the same thing as millions of others in Shanghai: She placed a huge grocery order via a delivery app. The 33-year-old spent nearly 500 yuan ($80) on fruit, vegetables, and meat — far more than she’d need, she assumed, as the government said the lockdown would only last … Continue reading ‘Group-Buying’ Becomes a Lifeline for Hungry Shanghai Residents