Engineering Cloud can make up the visa for one semester 160 days without punching in. According to the relevant public information, select the date of supplementary signature in the supplementary signature, which is limited to 30 days, and it is not supported after 30 days. Engineering refers to the research and application of materials science, computer, information, electronics, machinery, electricity, architecture, water conservancy, automobiles, instruments and other technologies and processes. Engineering or engineering is to apply the principles of science and technology to solve problems.