Article 20 of the Regulations on Railway Passenger Transport stipulates that students should study in ordinary colleges and universities, junior colleges (including private universities with academic qualifications recognized by the national education authorities), military academies, secondary, primary and secondary specialized schools and technical schools.
Students and graduate students who have no wage income and their family residence and school are not in the same city can enjoy half-price hard seat tickets, urgent tickets and air-conditioned tickets between their families and universities four times a year with their student ID cards (which can be proved in writing by primary school students) stamped with the official seal of the university.
Extended data:
The magnetic stripe of the student ID card consists of a paper carrier and a printed integrated circuit (the printed circuit is visible in the backlight). There are four alternative routes in one place in the circuit, called four magnetic needles, which are arranged in parallel. Each magnetic needle can independently withstand four instantaneous currents, so it can be used for four times once a year. And after each magnetization, one magnetic needle will be blown and the other will be connected.
In this way, in theory, a magnetic stripe just makes the best use of it four years later (but in real life, because students don't pay attention to protection, they often submit reimbursement four years later).
In view of this, it is also suggested that students should not take it to magnetize it until it is finished four times a year, because once magnetized, the magnetic needle that actually does not reach the limit will be blown out.
Some waste resources. There is an inductance coil and a chip in the card, and the card reader has an electromagnetic induction device. When the card is close to the card reader, due to the magnetic field emitted by the card reader, the coil in the card will generate induced current, which is also the power supply of the chip in the card. The chip will feed back the ID number of the card to the card reader, and the card reader will query the host for the card information.
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