What is the "expression pack" of railway billboards?

Recently, many billboards "Love the Road and Protect the Road" appeared on both sides of Mianning Railway Station in Liangshan, Sichuan, but the painting style was quite different: it turned out to be an expression pack! It turned out that these billboards were "tailor-made" by Xichang Railway Public Security Bureau for the opening of the line in chengdu-kunming railway, aiming to remind pedestrians to pay attention to traffic safety.

Recently, many billboards "Love the Road and Protect the Road" appeared on both sides of Mianning Railway Station in Liangshan Prefecture, Sichuan Province, but the painting styles were quite different, and they turned out to be expression packs. These billboards were "tailor-made" by the Xichang Railway Public Security Bureau, which is responsible for the safety of this section of the railway, with the purpose of reminding traffic safety. The picture shows students crossing the railway under the guidance of the railway police.

Students look at billboards.

There are many billboards on both sides of Mianning Railway Station.

Billboards at railway crossings.

The police explained the knowledge of road protection and injury prevention to the students.

These billboards were "tailor-made" by Xichang Railway Public Security Bureau, which is responsible for the safety of this section of railway, in view of the fact that chengdu-kunming railway is an open line, so as to remind people to pay attention to traffic safety.

Billboards in front of primary schools.