China’s Private Equity Clampdown, and a Tech Hotshot Drives Out of America

China is raising the bar for its vast field of venture capital and private equity companies, a move that looks aimed at avoiding a repeat of the P2P crisis a few years back. What's the implication for Chinese startups? And former autonomous trucking highflier TuSimple is retreating from the U.S. to focus on its China business. What's driving this abrupt turnaround for a company that was once so promising?