WS-012

Primary objective: To evaluate the safety and tolerability of WS012 after single and multiple oral administration in healthy Chinese adult subjects. Secondary objective: To evaluate the pharmacodynamics of total bile acid (TBA) and fecal TBA in WS012 after single and multiple oral administration in healthy Chinese adult subjects. Exploratory objective: To explore the effects of multiple oral administration of WS012 on blood lipids (TG, TC, HDL-C, LDL-C) in healthy subjects.