Chinese Star Anise Classic Formulas

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Warms the middle and disperses cold - Ba Jiao Hui Xiang is used for cold-type abdominal pain, epigastric fullness, poor appetite, and cramping when cold stagnation binds the middle burner.
Moves Qi and alleviates pain - the aromatic, penetrating fruit helps disperse cold-constrained Qi in the chest, epigastrium, and lower abdomen, especially in hernia-like or colicky pain patterns.
Warms the Kidneys and lower burner - traditional use extends to low-back pain, cold weakness of the waist, and cold accumulation affecting the lower abdomen or reproductive region.
Redirects rebellious Stomach Qi - it is also used when vomiting or nausea arise from interior cold rather than heat, food stagnation, or damp-heat.

Ba Jiao Hui Xiang with Wu Zhu Yu and Gan Jiang - warming-middle pairing logic for vomiting, epigastric cold pain, and nausea due to interior cold.
Ba Jiao Hui Xiang with Chuan Lian Zi or Xiao Hui Xiang - lower-abdominal cold-stagnation strategy for hernia pain, cramping, and cold-type abdominal constriction.
San Ceng Hui Xiang Wan - classical layered-fennel formula logic in which star-anise-type aromatic warmth helps address lower-abdominal cold, pain, and constrained Qi movement.

TCM Wiki lists Ba Jiao Hui Xiang as acrid and warm, entering the Liver, Kidney, Spleen, and Stomach channels, with actions of dispelling cold, regulating Qi, and relieving pain.
American Dragon emphasizes use for cold-type abdominal pain, vomiting, and low-back or lower-abdominal pain associated with interior cold and constrained movement.
Traditional comparison notes consistently place Ba Jiao Hui Xiang as the stronger, hotter relative of fennel-type medicinals, especially when more forceful cold-dispelling is needed.