```json { "stock_code": "600050", "stock_name": "中国联通", "market_type": "A", "analysis_date": "2026-01-04T14:51:59.246722", "structure_snapshot": { "structure_type": "downtrend", "ma200_position": "near", "phase": "unclear", "key_levels": [ {"price": 5.23, "label": "近期高点"}, {"price": 5.19, "label": "MA20"}, {"price": 5.11, "label": "MA200及当前价格"}, {"price": 5.07, "label": "近期低点"} ], "trend_description": "当前价格5.11，位于MA5(5.12)下方0.01元，位于MA20(5