MIL86

Primary objectives: To evaluate the safety and tolerability of a single subcutaneous injection of MIL86 injection in Chinese healthy subjects. Secondary objectives: 1. To evaluate the pharmacokinetic characteristics of a single subcutaneous injection of MIL86 injection in Chinese healthy subjects; 2. To evaluate the pharmacodynamic effects of a single subcutaneous injection of MIL86 injection on blood lipid parameters and proprotein convertase subtilisin/kexin type 9 (PCSK9) in Chinese healthy subjects; 3. To evaluate the immunogenicity of a single subcutaneous injection of MIL86 injection in Chinese healthy subjects.