B\u1ea1c Nh\u1edb l\u00e0 g\u00ec ?<\/strong> T\u1ea1i sao ch\u00fang ta c\u1ea7n quan t\u00e2m khi ch\u01a1i l\u00f4 \u0111\u1ec1 ? C\u00e1ch th\u1ed1ng k\u00ea nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ec3 hi\u1ec7u qu\u1ea3 cao nh\u1ea5t. B\u00e0i vi\u1ebft n\u00e0y m\u1eddi anh em c\u00f9ng tham kh\u1ea3o v\u00e0 th\u1ef1c hi\u1ec7n. Ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u chi ti\u1ebft v\u00e0 th\u1ef1c h\u00e0nh c\u1ee5 th\u1ec3.<\/p>\n Trong h\u1ea7u h\u1ebft c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ho\u1eb7c b\u00ed k\u00edp l\u00f4 \u0111\u1ec1 \u0111\u1ec1u li\u00ean quan \u0111\u1ebfn b\u1ea1c nh\u1edb. D\u1ef1a v\u00e0o nh\u1eefng th\u1ed1ng k\u00ea, t\u1ea7n su\u1ea5t m\u00e0 ch\u00fang ta \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh n\u00ean ch\u01a1i c\u1eb7p s\u1ed1 n\u00e0o. C\u00f3 nh\u1eefng c\u00e1ch th\u1ed1ng k\u00ea ch\u01a1i 1 ng\u00e0y duy nh\u1ea5t, c\u0169ng c\u00f3 nh\u1eefng c\u00e1ch th\u1ed1ng k\u00ea nu\u00f4i l\u00f4 khung hi\u1ec7u qu\u1ea3.<\/p>\n