HSI Starts Rebound: A good time to buy?

The Hang Seng Index jumped over 4% to 20,619 today, the biggest gain since December 5. The Tech Index surged 6%. The biggest winner was Tencent Holdings which advanced 6.2% to HK$368. -------- [TOPIC] What's the reason for this rebound? Is it a good time to buy HK stocks? What's your target price for HSI?