BUZZ — China's Xiaomi rises after official launch of new flagship smartphones
* Shares of Xiaomi Corp climb 1.1% to HK$26.46 after falling for two sessions * Stock is the eighth biggest pct gainer in Hang Seng TECH Index, which is down 1% * Chinese smartphones-to-consumer electronics maker says it officially launches its new flagship smartphones, the Xiaomi 18 Pro and Xiaomi 18 Pro Max; introduc