Shenzhen skyscraper closed as officials seek cause of shaking Toggle share menu Advertisement Shenzhen skyscraper closed as officials seek cause of shaking The owner of a 71-floor office tower in the southern Chinese city of Shenzhen closed the building on Friday pending an investigation into what caused the skyscraper to begin shaking on Tuesday. FILE PHOTO: People gather outside the 73-storey SEG skyscraper in Shenzhen, China, May 18, 2021, in this picture obtained from social media. Weibo/@Shaguo Dabao Tou/via REUTERS 3 related media assets (image or videos) available. Click to see the gallery. 21 May 2021 12:51PM Share this content Bookmark BEIJING: The owner of a 71-floor office tower in the southern Chinese city of Shenzhen closed the building on Friday pending an investigation into what caused the skyscraper to begin shaking on Tuesday.