中波

中 = 丨 + 口 : Mnemonic symbol: a dart board, because you always try to hit the center.

Julian Giant Squid (zhu-) is throwing dinosaur bones (丨) as darts on a dart board in front of the engine ((e)ng1). To make it a bit more difficult he's throwing mandarins (口) into the air as well and skewers them up right in the center (中 is a mandarin skewered on a dinosaur bone) in mid flight with the dinosaur bones. He's still able to consistently hit the center (中) of the dart board.

波 = 氵 + 皮 : Before entering observatory every visitor has to take off their shoes, so there are a lot of leather shoes (皮) in front of the observatory (o1). Beelzebub (b) cannot miss the opportunity to make a huge wave (波) by pouring his water bottle (氵) and to flush away all the shoes.

波 = 氵 + 皮 : Before entering observatory every visitor has to take off their shoes, so there are a lot of leather shoes (皮) in front of the observatory (o1). Beelzebub (b) cannot miss the opportunity to make a huge wave (波) by pouring his water bottle (氵) and to flush away all the shoes.