There is no age limit.
Admission to technical schools is not restricted by age, but some technical schools may set restrictions for management reasons. High school graduates have special classes in technical schools, and the educational system is one year less than that of junior high school students.
State tuition subsidy
Technical school students can enjoy the national tuition subsidy up to 1500 yuan per year, but they need to register as students. As for whether there is any subsidy for people over the age of 25, it is still unclear.
Age is not a problem
In China, there is no age discrimination in education, and even people in their 70s can take the general college entrance examination.
Vision problem
Some majors do require eyesight. If your eyesight is not up to standard, it is understandable that you can't apply for related majors.