When you think of the most friendly nation, probably chinese won't pop up from you mind immediately...To be honest, it could be not easy to make friend with a typical chinese. But once a strong friendship is built, it actually tends to be strong in both strength and length. Don't believe? look at these two passages:
CHINESE OATH OF FRIENDSHIP
I want to be your friend
For ever and ever without break or decay.
When the hills are all flat
And the rivers are all dry,
When it lightens and thunders in winter,
When it rains and snows in summer,
When Heaven and Earth mingle
Not till then will I part from you.
CHINESE, 1ST CENURY
---
When two people
are at one in their inmost hearts,
They shatter even
the strength of iron or bronze.
And when two people
understand each other
in their inmost hearts,
Their words
are sweet and strong,
like the fragrance of orchids.
Emmm...I completely agree.