This first quarter of the year, China has just overtaken Europe to become the second biggest market for Apple products (taking after the US), especially for iPhone sales. Increase in sales in recent years led Apple to focus more in the country. Helped by their huge population.
Apple recently opened up 5 new stores in China and a report from The Verge states that they earned $16.823 billion in revenue, a 71 percent increase from the last year. Here’s a representation of their sales growth
There was also a reported increase in App store revenue, over 100 percent. The Chinese just loves the iPhone.