Unidentified Gas Incident in Zhangjiang - Dear colleagues who work in Zhangjiang, today you all experienced a somewhat "terrifying" incident. Just before 5 PM, we received a message from HR informing us that there was an unidentified gas leak at the Zhangjiang Pharmaceutical Valley, and all staff were notified to evacuate immediately. It was rumored that the "unidentified" gas was hydrogen sulfide, which is toxic. While in the office, I didn't notice any unusual smell, but when I stepped outside...