Excuse me, what tree is with small red flowers?

This is red maple, red maple, also known as American red maple, northern red maple, North American red maple, swamp red maple, Canadian red maple and red maple. Native to the eastern United States and most parts of Canada. Native to North America, mainly distributed in Canada and the United States, and also cultivated in Hawaii. Red maple in North America is mostly distributed in the eastern part of the United States, and only some areas grow well in the west due to the limitation of precipitation conditions. Every autumn, pure improved red maple can stably present gorgeous red leaf effect, and acidic to neutral soil makes autumn colors more colorful.