San Mao's poems

It should be from Jiang Yan's poem, quoting San Mao's Tell Yourself.

The Tree of the Afterlife —— Jiang Yan's Migratory Birds Flying North

If there is an afterlife,

Become a tree,

Standing forever,

There is no gesture of sadness and joy.

Half in the dust,

Half of them are flying in the wind.

Half of it falls in the shade,

Half bathed in sunshine.

Very silent, very proud,

Never rely on, never look for.