NSY Projects
装卸时间计算表
Login required把装卸文件内容（PDF/PNG等格式）填入Excel模版
Car Depreciation Research Tool
Login requiredResearch vehicle market values, depreciation curves, and generation-change impact.
Python Study App
Login requiredPractice Python interview problems with guided hints, saved drafts, and persistent progress tracking.
Long-Term Stock Allocation Lab
Public accessDistribute a portfolio across stocks, options, and cash, then compare the long-term result with SPY and QQQ.