Table: tvb_series_2005_2
Columns: airing_date
english_title_chinese_title
number_of_episodes
genre
official_website

Question: What genre has over 20 episodes, with an English title (Chinese title) of wong fei hung - master of kung fu 我師傅係黃飛鴻?
SQL: SELECT "genre" FROM tvb_series_2005_2 WHERE "number_of_episodes" > 20 AND "english_title_chinese_title" = 'wong fei hung - master of kung fu 我師傅係黃飛鴻'