\u0110\u1ea1i s\u1ed1 – Ch\u01b0\u01a1ng 4 – B\u00e0i 2: C\u0103n b\u1eadc hai c\u1ee7a s\u1ed1 ph\u1ee9c v\u00e0 ph\u01b0\u01a1ng tr\u00ecnh b\u1eadc hai<\/a><\/blockquote><\/iframe>