Xiaomi Corp. is set to unveil its first electric vehicle, the SU7 series, in an attempt to enter the competitive Chinese electric vehicle market dominated by Tesla Inc. and BYD Co. The $10 billion foray into the world's largest EV market is expected to place Xiaomi in the midst of intense competition, particularly in the sedan segment. This move marks a significant test for Xiaomi's $8 billion stock rally as it ventures into the unfamiliar and competitive electric vehicle market.