今年的晚会创新运用总台超高清“云”传播技术配合舞台表演，既有“云”端演员通过提前录制的视频参与现场表演，“云”观众还可以通过现场大型新媒体背景墙参与互动。 因疫情防控需要，几位境外演员今年可能无法到现场演出，总台采用的超高清“云”视频以技术手段架起观众和演员之间的这道桥梁。 The second joint rehearsal of the 2021 Spring Festival Gala was held on Wednesday in Beijing and showed several new technologies. The 2021 gala features the innovative use of the super high definition cloud communication technology to coordinate the stage performance. Some actors, who are not in the Chinese mainland, may not be able to perform live this year due to COVID-19 pandemic prevention and control measures. But the cloud technology allows actors who can't be physically present during the live performances to participate via prerecorded videos while also remotely interacting with the audience. According to China Media Group (CMG), this method is not a simple inter-cut, but close interaction with live actors which is an integral part of the program. The stage of this year's Spring Festival Gala has installed a huge ring of the new media screen wall. A total of 154 ultra-high definition large screens are distributed above the rear area of the auditorium, and can synchronously access 154 channels. Relying on the strength of 5G bandwidth, the cloud communication technology will achieve cross-time interactive performance on the same stage. Upgrades in technology and stage will give the world a "panoramic feast" of the 2021 Chinese Spring Festival Gala. 推荐阅读：时代回响！80年代春晚的难忘瞬间盘点 今年春节，最受欢迎的年货居然是它？ 是的，我们有一份2021年春节观影指南