Miaoli County has been promoting the cultivation of medicinal salvia (Salvia miltiorrhiza) since 2021, with the Miaoli District Agricultural Research and Extension Station screening excellent salvia varieties. The key indicator component "Tanshinone IIA" can reach 0.3%, which is twice the standard of the Taiwan Pharmacopoeia, providing farmers with stable seed sources. By introducing mechanical harvesting, labor costs are reduced by 30%; the station also assists farmers in developing diverse processed products such as tea bags and seasoning packets, expanding marketing channels. This helps salvia farmers potentially earn higher net income compared to growing miscellaneous grains or rice, allowing them to cash in on the "red gold".