A introduction of an essay

With the policy of reform and opening up during the last three decades, China’s economy has an had enormous growth contributed by the rapid urbanization. Urbanization, commonly defined as the migration of people from rural to urban areas, and plays a significant role to improve in improving citizens' living standards at the in every aspect of society, economy and culture. Urbanization also pushed China’s real estate industry to an unprecedented height (high?), which has become the pillar industry of the national economy. However, due to the unbalanced development, it is has also exposed the backwards [nature?] of real estate development, for instance, construction and demolition waste, extremely high prices and a large number amount of evidence of a real estate bubble. Meanwhile, China also has to face a social issue: aging problem (elderly care?). This phenomenon changes the structure of the population and will leading to changes in demand for housing.

Before discussing that the Chinese real estate industry has shown dangerous [signals into a situation of reform], this essay will introduce further social problems of the aging phenomena, to prove that real estate needs restructuring to adapt to this change is an urgently matter. Then introduce a successful case of developing retirement communities in America to demonstrate the possibilities way of the direction of real estate in China. Finally, this essay will explore the appropriate principles to design retirement communities to adapt with to China's national conditions.

General Notes:

--Very well written overall, mostly minor issues with past tense and conjunctions.

--"An unprecedented high" is a common phrase that can be used to describe industries, markets, or other social aspects. 'Height' still sounds fine, but not quite as natural.

--"...exposed the backwards of real estate development..." I'm not sure how to really correct this without rewriting it entirely. I'm sure you are at least partially referring to the 'backwards nature' of the industry, but more in regards to it all being a real estate bubble ready to burst. The corrections listed in this sentence make it sound fine, but it is a bit long-winded and not very concise as a single sentence.

--'number' usually refers to something specific, like a 'number of documents' or a 'number of pieces' whereas 'amount' is <em>any</em> number and should be used when describing something that does not come in specific quantities (quantifiable numbers) like evidence.

--I'm assuming 'aging problem' is actually a specific name for a current condition in China, so a direct translation doesn't really work here. It sounds like what you're referring to is a 'growing population of elderly', 'an aging population', or something along the lines of 'elderly care' (retirement homes, hospice, in-home care, etc).

--I am unsure of what you mean in the first sentence of the second paragraph: "signals into a situation of reform." So I am unsure of how to properly word it. I assume you're referring to dangerous <em>signs</em> of something, but not 'reform'.