hé liú : river " xué rú nì shuǐ xíng zōu , bú jìn zé tuì .": This saying goes : "Learning is like rowing upstreams, not to advance is to drop back. ", it literally means: Learing is like sailing upstreams, if you do not move forward, you will move backward.
The slogan of the video is: xué shuō zhōng guó huà, péng yǒu biàn tiān xià. Learn Chinese and make friends everywhere.
This video (see at YouTube) is of advanced level difficulty. It has subtitles in English, Pinyin and Chinese characters. We especially recommend this video.