Where is the dialect of "Laotaner"

Tianjin Laotaner is a word in Tianjin dialect, which originally refers to people from rural areas to cities. In modern times, it is used to describe people's outdated ideas, or outdated clothes or behaviors, and it has become a derogatory term used to look down on people. The origin of the word "Laotaner": the dialect in Tangshan, Tianjin. Tianjin people speak vowels, so they are called "old altar children". Lao Tan 'er refers to a northerner with a strong accent. In the past, it specifically referred to Tangshan people and was called Tangshan Old Taner, which was not derogatory. Later, people specifically referred to rural people outside Tianjin. The word "Lao Taner" has been used to describe others' ignorance and rusticity, and it has become a derogatory term to look down on people.