What is the black history of Sister Fox?

Sister Fox wants to have a good development, so she boldly broke up with the company. A company can be an artist, but an artist cannot be a company. Sister fox has exhausted all means, and it is useless to fight with the company. You can't even get the whole play. Sister fox finally got on a big line, but in order to give herself a long face, she bought a lot of announcements and publicity of the hostess, all of which are her black history.