Mechanical engineering including mechanical and chemical engineering. At its simplest, thermodynamics is the study of energy, its use and transformation through a system. Typically, engineering thermodynamics is concerned with changing energy from one form to another. As an example, automotive engines convert chemical energy (enthalpy) from the fuel into heat, and then into mechanical work that eventually turns the wheels. Thermodynamics principles are used by mechanical engineers in the fields of heat transfer, thermofluids, and energy conversion. Mechanical engineers use thermo-science to design engines and power plants, heating, ventilation, and air-conditioning (HVAC) systems, heat exchangers, heat sinks, radiators, refrigeration, insulation, and others.
Dalian most liveable city in China according to "China Daily". Standard Mandarin is usually spoken in Dalian because it is a city with people from various locations. But Dalian natives use Dalian dialect, which belongs to the Jiaoliao Mandarin subgroup spoken in parts of Shandong and Liaoning provinces. Most of the residents of Dalian were farmers and fishermen who had come from Shandong Province in a large population move, the "Chuang Guandong", during which era Dalian was occupied by the Japanese as the Kwantung Leased Territory. The Dalian dialect incorporates a few loanwords from Japanese and Russian (very rare in Chinese),