RecruitingPhase 1Drug trialA Single Dose Study to Investigate the Pharmacokinetics (PK) of Telitacicept Pre-filled Injection and Freeze-dried Powder Injection in Chinese Healthy SubjectsThis is an open-label, randomized, parallel group, single dose study in healthy Chinese subjects. The purpose of this study is to evaluate the Pharmacokinetics and safety of Telitacicept Pre-filled Injection and Freeze-dried powder Injection.