Out of curiosity, you don't seriously believe as the world biggest trading nation, China really think much about the trade with small trading nations like BD, do you?
China cares enough that it still wants to maintain friendly relations with BD. BD sees China simply as a business partner to be used as necessary.
Chinese leaders are not stupid as BD is fast growing country of over 160 million population. Leading economic forecasters predict BD to be the fastest growing large economy to 2030.