[{"title":"( 3 个子文件 4KB ) 妙用北向资金,跟着操作5年4倍","children":[{"title":"mail.py <span style='color:#111;'> 1.14KB </span>","children":null,"spread":false},{"title":"download.py <span style='color:#111;'> 5.62KB </span>","children":null,"spread":false},{"title":"北向择时策略.py <span style='color:#111;'> 2.17KB </span>","children":null,"spread":false}],"spread":true}]