XTYW-007

Primary Objective: To evaluate the safety and tolerability of XTYW007 tablets in healthy subjects and healthy subjects with elevated LDL-C under fasting conditions, including single and multiple administrations; to evaluate the pharmacokinetics of XTYW007 tablets in healthy subjects and healthy subjects with elevated LDL-C under fasting conditions, including single and multiple administrations. Secondary Objectives: To evaluate the pharmacodynamics of XTYW007 tablets after single and multiple administrations in healthy subjects and healthy subjects with elevated LDL-C; to evaluate the effect of food on the pharmacokinetics of XTYW007 tablets after a single administration; and to conduct a preliminary study on the metabolic transformation of XTYW007 tablets after a single administration under fasting conditions.