Characteristics of thorny issues:
1 is a common problem of most users, so it is called the pain point of the market to have the value of making products.
2. The problem is objective. Whoever can find and solve it first will get the first chance in the market.
Sometimes we need to rely on some objective conditions. For example, the birth of iphone requires the development and popularization of smartphone operating system.
synonym
ask
The pronunciation x \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ "
Zou Taofen's experience 9: "The demand for arithmetic in advanced physics is also particularly tight."