Accommodation is the same, 2 yuan for a working meal, plus overtime. It is not clear that freshmen provide accommodation in the first year and graduate in two years.
In terms of salary, the salary of employees who joined in 2009 is around 2500 in the bridge industry, and the research institute may be higher. Tianjin is newly built, and it seems that it has not been mass-produced. The salary there is about 600 more than Baoding. I forgot the details.
The salary will not be too high in the future. It might be better to stay in the Great Wall for a few years before going out. My colleague graduated from the Great Wall, stayed for three years, and jumped to Beijing for 80,000 to 90,000. It is said that it is easier for designers and projects to find jobs after going out, but the rest is not clear.
Baoding's Great Wall companies have many rules, and there are often messy inspections and fines. The Great Wall Bridge was fined 1000 yuan for sleeping at night, and other companies were fined several hundred yuan for the same reason. Moreover, the Great Wall also has a clean government investigation team, also called a special agent organization, which specializes in checking the contact with customers and suppliers. Sometimes even the communication between colleagues will be investigated. I have no suggestions here. I can only explain the situation. It's up to you whether you can work in the Great Wall or not.