Construction of the Shenzhen International Trade Center began in April 1982. At first each floor took seven days, then six, five and four. From the 31st floor on, the builders kept to three days per floor. CCTV’s evening news and People’s Daily followed the progress, and “three days a floor” became known across the country.
The main tower was topped out on April 30, 1984, a full month early. At 160 meters, it was then the tallest building in China. Shenzhen sudu, “Shenzhen speed,” became a phrase for the pace of the whole zone.