export+import trade > 30 trillion yuan($4.5 trillion)

China is still a poor 3rd world country. Seems  a ''Middle class" family of 3 is classified as one with annual income of 100K to 500K yuan(~$14.7K to $74K) and can afford car, vacation and buy home. Only 30% of chinese are in the ''middle class" category

中等收入群体是有测算标准的。以中国典型的三口之家年收入在10万元-50万元之间的，已经有4亿多人，约1.4亿个家庭，有购车、购房、闲暇旅游的能力。

http://www.stats.gov.cn/tjsj/sjjd/201901/t20190121_1645944.html