"Hechi" refers to a city in Guangxi Zhuang Autonomous Region, which is quite close to Nanning. You should have heard of Nanning.
This sentence is used to describe girls in Hechi. As for "shame at night like a bird", I can't say clearly, because it's a bit YD. Not every woman is like this, you know?
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Sister Longzhou has a good mouth, but she talks more and does less.
Sister Nanning is kind-hearted. No matter how poor her family is, she will never run away.
Sister Guilin has a good temperament, and the water is tender and not old.
Wuzhou girl is of good quality and won't quarrel around her husband.
Sister Beihai has a good heart and prefers to work three shifts by herself.
Sister Chongzuo has a good figure and can't be fed all year round.
Sister Hechi has a good water color and is ashamed as a bird at night.
Sister Baise has a good eye, so don't change.
Sister Yulin is good at sewing clothes and mending pants.
The host and sister are well-bred, virtuous and get up early.
Sister Hezhou has a good ability and runs very seriously every day.
Sister Fangcheng is strong enough to chase her husband all over the street.