Chinese discount e-commerce app Pinduoduo said its revenue for the second quarter rose 36%, beating analysts’ expectations. The company’s better-than-expected results came amid a sharp slowdown in China’s economy due to the country’s severe Covid-19 restrictions. Pinduoduo, whose low-cost offerings include a $2 pair of shoes, a $12 sofa and a 50 cent box of potatoes, said consumer sentiment...