Can an advisor capture an enemy piece in xiangqi?
These answers restate the rules implemented by our open-source engine, which follows the WXF laws and is regression-tested against the official 110-diagram repetition casebook. Where an answer refers to a specific position, that position lives on the linked reference page, where the build verifies it against the engine before publishing.
Direct answer
Yes, on the same terms it moves: one point diagonally, and only among the five points it can ever reach inside its own palace. An enemy piece that has advanced diagonally adjacent to an advisor, inside that palace, can simply be taken. Nothing about capturing changes the advisor's severe movement limits.
Why this rarely happens
Most enemy pieces that reach the palace arrive on a straight line, via a chariot, cannon or soldier, not diagonally, so an advisor often cannot reach them to capture even though they are close. The advisor's job is usually to occupy a point and deny it, rather than to actively hunt captures.
When it matters
A soldier that has crossed the river and stepped onto a diagonal point next to an advisor is exactly the case where this comes up, and losing that soldier for nothing can be the difference between a stalled attack and a converted one. See what the palace actually is for the fuller picture.
Related questions
Can an advisor be captured while defending?
Yes, like any piece, if an enemy piece can legally reach it.
Does an advisor ever leave the palace to capture something?
Never. If the target is outside the palace, the advisor simply cannot take it.