https://www.reuters.com/article/us-xiaomi-ipo/chinas-xiaomi-files-for-mega-hong-kong-tech-ipo-lifts-lid-on-financials-idUSKBN1I403A >Smartphone and connected device maker Xiaomi [IPO-XMGP.HK] filed for a Hong Kong initial public offering on Thursday that could raise $10 billion and become the largest listing by a Chinese technology firm in almost four years.