Table schema:
CREATE TABLE table_name_20 (english_title__chinese_title_ VARCHAR, number_of_episodes VARCHAR, airing_date VARCHAR)

Question: Which title had 20 episodes and aired on 11 jun- 6 jul?
SQL: SELECT english_title__chinese_title_ FROM table_name_20 WHERE number_of_episodes = 20 AND airing_date = "11 jun- 6 jul"