乓

hill (丘) + impact dot (丶) = a sharp bang

乓 is one half of 乒乓, the sound of ping-pong. Picture a ball striking a hard surface — the mound suggests the solid object, and the dot marks the sudden moment of contact that makes the bang.

那个球打在地上，发出乒乓的声音。

他们打乒乓球时，乒乒乓乓的声音不停。