An Emoji Talk: Person bowing deeply with fearful face and plewds ?

This emoji is officially “Person Bowing Deeply.” There are four blue triangles above the head in the emoji of Apple Color Emoji. What are they?

Apple Color Emoji is based on SoftBank’s animated emoji. Here is the emoji 「土下座 dogeza」:

Look out his fearful face ? and plewds ? ! It is obvious that the blue triangles are corrupted from the plewds.

土下座 - Google Images

Segoe UI emoji has more different bowing emoji:

It is not 土下座 dogeza, one of Japanese gestures, but one of Chinese ancient greeting gestures 揖礼 (揖礼 - Baidu Baike).