Ph\u1ea7n S\u00e1u – Ch\u01b0\u01a1ng 1 – B\u00e0i 27: Qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh qu\u1ea7n th\u1ec3 th\u00edch nghi<\/a><\/blockquote><\/iframe>