How to turn off the lights in Tianjin Four Seasons Hotel?

Tianjin Four Seasons Hotel is a fully intelligent hotel. The switches of the lights and curtains are voice-activated. You can say close so-and-so, close the curtains.

Four Seasons Hotel is a global luxury hotel chain, managing hotels and resorts all over the world. Four Seasons Hotel was rated as one of the best hotel groups in the world by Travel and Leisure magazine and Zagat Guide. Four Seasons Hotels Group is headquartered in Toronto, Canada. Bill Gates, former CEO of Microsoft, and Prince Alwaleed of Saudi Arabia are among the major shareholders. Four Seasons Hotel also has a residential plan, ResidenceClub, which allows customers to purchase the timeshare right of holiday homes. Holiday homes owned by Four Seasons Hotel are very expensive.