StockConnectClosureFlowReboundHkeq was the factory's first experiment on Hong Kong equities: it bought a 10-name high-southbound basket on the last HK session of each mainland holiday closure and held through the return of suspended Stock Connect flow, using a point-in-time closure calendar. The mechanism was implemented faithfully — all 350 legs long, entries on the final closed mainland weekday, exits on the 3rd session after resumption — and the initial backtest looked clean on gross numbers (12.61% total return, PF 1.28, 58.6% win rate), which earned an 'optimize' verdict at backtest review. Optimization then exposed the statistics: IS 0.910 vs OOS 0.493, PBO 0.656, deflated Sharpe 0.0157, failed programme FDR, and an OOS record carried by a single window, while the 350 trades reduced to 35 independent events with t = 0.90. The analyst abandoned it after one iteration, noting that HKEQ fees were never actually charged in the backtest and that netting the real ~0.22% round trip puts per-trade return below the venue floor, with no tunable path since the only live parameter is a cliff and Connect suspensions occur roughly 7 times a year by regulation.