They think they are already very sophisticated, know how to human well-being, but in fact it will run into a brick wall.

以为自己已经十分老练，懂得人情冷暖，但原来都会碰壁。

youdao

We have a lot of people that have run into a brick wall in trying to come up with solutions to our current problems.

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Unfortunately, those plans often run straight into a brick wall when the budding business owner starts trying to open the business in their town.

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