Examine the objectives and tasks of the healthy China strategy. Health equity means that both the poor and the rich can achieve the same health status, which is only possible when the country's economy is highly developed and the rich's money is transferred to the poor. It is very difficult to achieve health equity in an all-round way. The time node for China to basically achieve health equity is 2030, and China's economy will enter the ranks of high-income countries. So the answer is a.