Xiaomi has posted a cryptic message on Weibo in regard to the Xiaomi Mi 10 smartphone. The message was in the form of a complex-looking equation, which when solved revealed that the flagship device had been reduced by 300 yuan (US$42). The Xiaomi Mi 10 cost from 3,999 yuan (US$562) when first launched in China.
https://www.notebookcheck.net/Xiaomi-Mi-10-smartphone-receives-official-price-cut-of-300-yuan-US-42.467782.0.html