Place it right after the payment attempt in a short edit, following a keyboard typing sound as the details are entered and before a shocked sound as the reaction lands. That order gives the failure a clear setup, a clear interruption and a visible response without needing extra explanation.
关于此声音
This is a very short, 0.36-second error chime in the style of a Windows system alert, a single sharp tone that signals something has gone wrong. It feels abrupt and awkward, the kind of sound that makes a failed attempt feel final and a little funny. It works as a quick cue for a payment that did not go through.