Good morning, Natalia!
Thank you so much for your questions – I love how much attention to detail you are putting into your studies! In the herbal formula Jin Gui Shen Qi Wan, the Bensky Formulas & Strategies book states “baked Aconiti Radix lateralis (bao fu zi)”, so here Bao is indicating that the Fu Zi is baked. And in the herbal formula Ji Sheng Shen Qi Wan, the Chen+Chen formulas book states “Chuan Niu Xi (Radix Cyathulae), jin (soaked) with liquor”, so here Jin is indicated that Chuan Niu Xi has been soaked in liquor! I hope this clarifies things for you! Let me know if you have any further questions.
Have a beautiful day and long weekend!
All my best,
Kylie