@Wang Hung Spoiler Just tap back and forth on the grass block and the stone block below the the Altar until B fell to the floor.
Done!! It's simpler than I thought. I have to say you're really talented, it's a creative one, and more interesting than the 1st version. Thanks!!!! I have beat another level before trying this one
Falling down took me quite a long time. My excuse is that I'm playing with my non-dominant hand, which is not nearly as coordinated as the other. Good level though.