Alibaba (NYSE: BABA) and Baidu (NASDAQ: BIDU) are two of the largest tech companies in China. Alibaba owns the country's largest e-commerce marketplaces and its top cloud infrastructure platform. Baidu owns the country's largest online search engine. I compared these two tech giants back in April and declared Baidu was a better buy because it faced fewer regulatory headwinds, had a lower valuation, and its core advertising business was gradually recovering. But both stocks have burned investors since I wrote that article: Baidu's stock price has declined about 30%, while Alibaba's stock price has tumbled nearly 50%. Image source: Getty...