What does "Sagittarius is so breathless and unhappy to prepare a sack" mean?

This is a sentence from a short article on the psychology of constellations. It refers to the psychology of Sagittarius when they are angry.

It probably means that he can't bear this tone and wants revenge, and he is still a sinister person.

All zodiac signs are as follows:

When angry, Taurus eats too much and is too lazy to deal with it. A Scorpio will not be lazy even if the sky falls. Sagittarius can't help but prepare a sack. Leo doesn't care about him and goes directly to him to settle the score. Cancer is just a talker, and it's best to dream about him. Pisces is hiding to write a romantic and tragic poem. Aquarius couldn't swallow this tone, so he had to ridicule him anyway. If Libra messes with me, just get close to him, flatter him, and give him a big meal. Capricorns are afraid of causing trouble and will scold secretly so that if something happens, they can quickly put on a smile. Gemini has the theory of absolute revenge by uniting with secondary enemies to eliminate the primary enemy. Virgos have a good memory. A gentleman will wait ten years for revenge before he is unsuspecting. Aries wants to throw money at people, but it's better to pick it up and spend it to vent.