Every winter he buys ginseng and deer antler for tonic supplementation.
Tips
culture
参茸 lumps two prized TCM tonics together: 人参 (rénshēn, ginseng) and 鹿茸 (lùróng, velvet deer antler). Drugstore signs like 参茸海味 ('ginseng, antler, and dried seafood') are a fixture in Chinese medicine shops, especially in Hong Kong.
mistakes
Note 参 here reads shēn (the medicinal-herb pronunciation), not the more common cān (as in 参加 'attend').