In terms of ability, it is actually easier to learn and use than civil engineering. It may take a fresh graduate six months to 1 year to learn civil engineering, but the installation only takes 1 to two months. In terms of salary, it depends on where you do it. In the construction unit or Party A, the salary is actually similar, and the installation work is relatively less. However, in the firm, because the commission is paid according to the calculated amount, the salary of installation is not as much as that of civil engineering, and because the installation is complicated, the people who do the installation are more bitter.