It's developing well With honesty and service, Yang Feng took root in the field of aged care service and explored innovative service contents and forms. At the right time of development, he led the team to build the first "one-stop" old-age service brand in Sichuan-Wisdom Hall. Sichuan Zhihuitang Pension Service Co., Ltd. (Zhihuitang for short) is a collection of pension care, health consultation, holiday travel, leisure and recuperation, medical equipment, health food and electronic products.