And then we have that original video sources and we do one month of immersion learning.

然后我们有原始的视频来源，我们进行一个月的沉浸式学习。

We are working on reproducing a substantial amount of video sources of the China Media Group which requires arduous work.

我们正在努力复制中国传媒集团的大量视频资源，这需要艰巨的工作。