CCTV9英语新闻：侦查介入东星悲剧的原因

For more on the eastern star tragedy, our reporter Tang Bo joins us from the scene of the accident. 

Q1. Hello Tang Bo, can you describe the mourning ceremony for us? 

Q2. As for the ongoing search for the missing, what challenges are search teams facing? How is the investigation into the incident progressing? Any idea when it will be complete?