China Construction Eighth Engineering Division Corp., Ltd. (CCEED) has integrated the concept of "repair the old as before" into the renovation project of the Capital Gymnasium for the 2022 Beijing Winter Olympics. The renovation retained the original structural materials, and the façade of the gymnasium was reprinted with imitation stone paint with traditional Chinese characteristics and aesthetic and practical value. Each piece of stone used in the renovation project is a legacy of the original building. To ensure green construction and create the "Most Beautiful Ice" for the 2022 Winter Olympics, the project, for the first time, applied the transcritical CO2 ice-making technology and successfully made the first piece of the "Most Beautiful Ice". The ceiling of the gymnasium hangs an ultrathin films system powered by a new acousto-optic projection technology. The film material of the screen is a high-strength base fabric for aerospace-grade fiberglass, which creates a dreamy experience at the competition site and provides an excellent atmosphere and visual guide for the mass public to enjoy snow sports in the future.the mass public to enjoy snow sports in the future.