China's BYD has launched a rival to Tesla's Model 3 at half the price.BYD's Qin L EV sedan has a starting price of 119,800 yuan compared to 235,500 yuan for a basic Model 3.Qin L offers 545km driving range compared to 634km for Model 3, both feature a digital cockpit and basic self-driving features.BYD also launched the high-end Denza N9 SUV under the Denza brand, available as pure-electric or plug-in hybrid models.