Listen to the East, you are to hear the lion roar. Stare at the East, you are to see the dragon soar.

以上句子有2个谓语动词，listen to, are，因此句子缺少连词，因此必须加上。

应该为：

Listen to the East and you are to hear the lion roar. Stare at the East and you are to see the dragon soar.

备注：祈使句前面表示表示条件，相当于:If you listen to the East,you are to hear the lion roa. If you start at the East, you are to see the dragon soar

=If you listen to the East,you will hear the lion roa. If you start at the East, you will see the dragon soar