In China's lunar calendar, 2020 is not completely over. This year, we lost many academicians who made great contributions to our country. At the end of 2020 and the beginning of 20021,Hok Nin Lau, a professor at Harbin Institute of Technology, also died of illness. Like all university professors who devote themselves to research, Liu Jiaoshou enjoys a good reputation in the school.

First, let's look at Professor Hok Nin Lau's reputation in his academic field. Professor Hok Nin Lau mainly studies hydraulics and fluid mechanics. He has profound attainments in these subjects and outstanding scientific research achievements.

As amateurs, we may not know much about the specific contents of hydraulics and fluid mechanics, nor do we know much about their scientific research contents and experiences. But according to our existing knowledge, fluid mechanics is an essential subject knowledge for manufacturing submarines. Without a master of fluid mechanics like Professor Hok Nin Lau, many practical problems may be difficult to solve.

Secondly, let's look at Professor Hok Nin Lau's achievements in textbook construction. Professor Hok Nin Lau not only focused on his own scientific research, but also participated in compiling teaching materials such as Hydraulics, Fluid Mechanics, Fluid Mechanics and Fluid Machinery, among which Fluid Mechanics became an excellent teaching material and was reprinted many times.

Many college students who study this knowledge may have used the textbooks written by Professor Hok Nin Lau.

Everyone who has been to college knows that college textbooks are not as concise and interesting as high school textbooks and junior high school textbooks. College textbooks are basically full of pages, either theoretical exposition or formula derivation. It is not an easy task to compile a complete and recognized textbook according to the whole knowledge system.

Finally, let's look at Professor Hok Nin Lau's reputation among students. Although Professor Hok Nin Lau shoulders the heavy responsibility of scientific research, he still insists on the first-line teaching platform. Professor Hok Nin Lau has a high sense of responsibility for teaching practice. Every time in class, Professor Hok Nin Lau will write a speech in advance, and the lecture will be smooth, which is very popular among students.

Although Professor Hok Nin Lau was hospitalized for many times due to illness in his later period, he still faced the illness optimistically and stubbornly stuck to the job at hand.

We are deeply saddened by the death of Professor Hok Nin Lau. However, we also hope that more scholars in the scientific community can devote themselves to scientific research like Professor Hok Nin Lau and cultivate talents for the country.

It is because of the existence of people like Professor Hok Nin Lau that generations of talents can advance wave after wave for the development of the country.