Reasons for Zhuge Liang's great achievements

There are two reasons for Zhuge Liang's great achievements:

First, their own reasons:

1) Don't be confused by fame and fortune.

2) serious and responsible,

3) Be an upright person.

4) Brave and resourceful

Second, external reasons.

1) recommended by my friend Xu Shu.

2) Three visits by those who know the sages

3) Social unrest and political situation