On the twentieth level, there is another test to determine who may continue to climb the tower. Many who have failed and buried their dreams gather there. However, Ja Wangnan does not want to give up and puts everything on one last chance.
Unless you pass the test and achieve 
E-rank, you can't climb any higher.
‫ما لم تجتاز الاختبار وتحصل على
‫الرتبة إي، فلا يمكنك الصعود لأعلى.
Bis man die Prüfung besteht
und den Rang E erreicht,
Si no la pasas y te nombran
Regular de rango E,
Si no la pasas y te nombran
Regular de rango E,
À moins de réussir le test
A meno che non si superi il test e si riceva 
il Rank E, non si può proseguire più in alto.
Não será possível subir mais do que isso,
a não ser que você passe no teste e consiga o Rank E.
Но до тех пор, пока они не сдадут экзамен
и не получат ранг E,