The purpose of this clinical trial is to evaluate the impact of early initiation of PCSK9 inhibitor therapy for intensive lipid-lowering in Chinese patients with acute coronary syndrome (ACS) during hospitalization on the rate of lipid goal attainment, the time to achieve guideline-recommended lipid levels within one year, and the incidence of adverse cardiovascular events. The primary research question is whether early initiation of PCSK9 inhibitor therapy during hospitalization for ACS patients in a real-world Chinese setting can increase the rate of lipid goal attainment, shorten the time to reach guideline-recommended lipid levels within one year, and improve the risk of adverse cardiovascular events. Researchers will compare three lipid-lowering strategies: PCSK9 inhibitor therapy (with or without statins ± Ezetimibe/Hybutimibe), statin plus Ezetimibe/Hybutimibe therapy, and statin monotherapy, to assess the potential of PCSK9 inhibitor drugs in accelerating lipid goal achievement and reducing adverse cardiovascular events in ACS patients. Participants will: Receive PCSK9 inhibitor therapy (with or without daily statins ± Ezetimibe/Hybutimibe) every two weeks, or daily statin plus Ezetimibe/Hybutimibe therapy, or daily statin monotherapy. Undergo follow-up assessments of relevant laboratory indicators at baseline, 3 days after admission, discharge, and 1, 3, 6, and 12 months post-discharge. Record the occurrence of major adverse cardiovascular events.