gudu gudu (咕嘟咕嘟)

Boiling / simmering liquid. A steady bubbling rhythm.

sha sha (沙沙)

Soft friction like leaves, fabric, or light brushing.

puleng (扑棱)

Quick wing flaps when taking off. Short burst-like movement.

dida (滴答)

Dripping water. Clear, separated beats.

zizi (滋滋)

Sizzling on a hot pan. Dense, rapid micro-bursts.