What's the difference between Beijing Foreign Studies University and Second Foreign Studies University?

Beijing Foreign Studies University (Project 2 1 1, a key university directly under the Ministry of Education, first-class undergraduate, A++)

Shanghai International Studies University (Project 2 1 1, a key university directly under the Ministry of Education, first-class undergraduate, A++).

Guangdong University of Foreign Studies (A++ level under the jurisdiction of Guangdong Province)

Beijing language and culture university (A+ directly under the Ministry of Education)

Beijing international studies university (Grade B under the jurisdiction of Beijing Municipality)

Tianjin Foreign Studies University (Grade B under the jurisdiction of Tianjin)

Xi International Studies University (Grade B under Xi 'an)

Dalian International Studies University (affiliated to Dalian Grade B)

Sichuan International Studies University (Grade B under the jurisdiction of Sichuan Province)

PLA Foreign Languages College (Military College)