Is it illegal to carry foreign funny videos?

Unauthorized deletion of works protected by copyright law will infringe the copyright of the original author. According to the Copyright Law of People's Republic of China (PRC):

Article 15 The copyright of cinematographic works and works created by methods similar to cinematography shall be enjoyed by producers, but writers such as screenwriters, directors, photographers, lyricists and composers shall enjoy the right of authorship and receive remuneration according to the contracts signed with producers. Authors of works that can be used independently, such as scripts and music, in cinematographic works and works created by methods similar to cinematography, have the right to exercise their copyright alone.

Article 35 For the publication of a work resulting from adaptation, translation, annotation, collation and assembly of an existing work, the permission of the copyright owner of the adaptation, translation, annotation, collation and assembly of the work and the copyright owner of the original work shall be obtained, and remuneration shall be paid.