what types of cryptocurrency are there, Knowledge graph

December 30th: Skywalker, a humanoid robot made in Chengdu under Sichuan Humanoid Robot Technology Co., Ltd., will be launched on December 30th.December 27th: Shenzhen International Glasses Expo will be held in Shenzhen from December 27th to 29th.December 21st: The 2nd International Conference on Artificial Intelligence Generated Content and Large Model Application Innovation Conference will be held in Beijing from December 21st to 22nd.

Today's operation is as followsDecember 18th: Volcano Engine 2024 Winter FORCE Powertrain Conference will be held on December 18th-19th.December 20th: 2024 China (Yangtze River Delta) Low-altitude Economic Application Expo will be held on December 20th-22nd.

December 20th: 2024 China (Yangtze River Delta) Low-altitude Economic Application Expo will be held on December 20th-22nd.December 18th: The 2024 Communication Industry Conference and the 19th Annual Conference on Communication Technology will be held in Beijing on December 18th.December 21st: The 2nd International Conference on Artificial Intelligence Generated Content and Large Model Application Innovation Conference will be held in Beijing from December 21st to 22nd.