Are Life in the Undergrowth and Feiyu Show both documentaries ?
yes
Title: Life in the Undergrowth
Passage: Life in the Undergrowth is a BBC nature documentary series written and presented by David Attenborough, first transmitted in the UK from 23 November 2005.
Title: Schalkse Ruiters
Passage: Schalkse Ruiters, translated as "Roguish Horsemen", was a very successful show aired on the Flemish TV channel Eén.  The motto of the show is: do not believe what you see on TV.  During the show, three documentaries are presented.  The viewers vote whether the documentaries are real or fake.  Anno 2012 the show still got the Belgian record of most viewers, dating from an episode sent out in 1997.  The show won almost every Belgian television award.
Title: Feiyu Show
Passage: Feiyu Show () is a 2014 Chinese documentary film directed by Sun Hong.  It was released in China on October 23, 2014.
Feiyu Show Life in the Undergrowth