For Chinese tech investors, the subcontinent is second only to US as a destination

When Eric Jing visited Paytm (pronounced pay-tee-em) for the first time for a board meeting in New Delhi in the summer of 2015, text etched on one of the office walls of India's largest mobile payment service provider caught his eye. It was a grand goal that Paytm set for itself: 1 million transactions per day.

Back then, Paytm had less than 22 million users.