Xiaomi's Redmi K20 and Redmi K20 Pro sold 200,000 units in their first flash sale, and today the company announced that the duo reached 1 million sales. The series was introduced on May 28, which means the company needed just 4-5 flash sales to push over a million smartphones.The numbers might have even been higher, but the production capacity is seemingly limited at this point - the Pro version isn't even available outside China yet. To celebrate the seven-digit sales, Redmi brand manager Lu Weibing announced promo sales in China - every buyer of a Redmi K20 smartphone will get...