"For example, a newly established company is temporarily unprofitable, which means that it does not need to pay taxes. Is it necessary to declare taxes to the tax authorities every month from June 1 to June 15? "
Not making profits temporarily does not mean not paying taxes, but not paying enterprise income tax temporarily. Others, such as value-added tax, business tax, as long as you have operating income, you still have to pay according to the regulations, not depending on whether you are profitable or not.
"Is it necessary to declare tax payment to the tax authorities from 1 to 15 every month?"
It also requires zero declaration every month.