This unloved Chinese EV stock might be a great contrarian investment.Nio (NIO 1.35%), a Chinese maker of electric vehicles (EVs), went public at $6.26 per American depositary share just over six years ago. Its stock soared tenfold to a record high of $62.84 during the apex of the meme stock rally on Feb. 9, 2021, but it now trades at less than $5.Like many other smaller EV companies, Nio struggled to ramp up its production, maintain its pricing power, and narrow its losses. China's cooling economy and risin ...