China A-share defense sector swings higher; North Navigation hits limit-up

The breadth of the move — multiple names at consecutive limit-ups alongside a fresh one — points to a momentum-driven rotation rather than a single-stock story, with speculative flows concentrating in defense-linked small caps. For mainland market watchers, the signal is less about the sector's fundamentals than about risk appetite returning to high-beta themes. Whether this clustering of limit-ups broadens into sustained sector participation or fades as a short-lived speculative burst is the open question worth tracking.