Neon Highway isn't based on a true story. It's a made-up tale crafted to take viewers on a fictional adventure. The elements in it are all fabricated to engage and entertain the audience.
The Mila Mountain Tunnel was a key control project of the high-grade highway of the Lalin section of the Sichuan-Tibet line. It was a double-track separated tunnel with a total length of 5720 meters and was constructed according to the standard of two-way four-lane high-grade highway. The tunnel was located in a cold and anoxia-deficient area at an altitude of 4750 meters. The construction faced difficulties such as low oxygen content and limited working hours. The tunnel was jointly built by the Second Bureau and the 12th Bureau of the China Railway Group. It took more than four years to build and was recently opened to traffic. After opening to traffic, it would shorten the journey over Mount Mira, facilitate the traffic from Tibet to Nyingchi, and promote economic development and improvement of people's livelihood along the route. As for the specific situation of the Yela Mountain Tunnel, there was no mention of it in the information given so far.
A 'highway novel' is often a type of story that has a significant part of its plot taking place on highways or roads. It might involve characters on a journey, perhaps running away from something, or going towards a new destination. The highway serves as not just a physical setting but also a metaphor for the characters' paths in life.