Elon Musk is $36 billion richer following his recent trip to China.

The Tesla CEO has gained $36 billion in net worth over the last week after Tesla shares surged over reports that the company had moved a step closer to getting approval to roll out its Full Self-Driving technology in China. China is Tesla's second-biggest market.

Musk's fortune, closely tied to his 20.5% stake in Tesla, has fluctuated considerably over the past few years.