Complex sentence: Yang made his debut for the Chinese national team on 13 December 2014 in a 4-0 win against Kyrgyzstan; however, the match was not recognized as an international "A" match by FIFA.
Split into simpler sentences: Yang made his debut for the Chinese national team on 13 December 2014 in a 4-0 win against Kyrgyzstan. However, this match was not recognised as an international "A" match by FIFA.