A total of 90 post cesarean participants will be randomly assigned to one of three treatment conditions: (1) standard care (n=30); (2) standard care with Medulla Junci adhesive on auricular acupoints (n=30); (3) standard care with magnetic pellets adhesive on auricular acupoints (n=30). The standard care group participants will only receive the standard post cesarean care of the hospital without any additional therapy. The same set of six pre-specified auricular points will be adopted for both Medulla Junci and magnetic pellets groups. The treatment will be initiated within 4 to 8 hours post cesarean for 96 hours during their hospital stay at a maternal hospital in Kaohsiung, Taiwan.