 So the emerging contaminants we define as chemicals now cause the concern about the harmful impact on the human and the ecology of the earth. But there are lots currently regulated, such as the personal care and the pharmaceutical products. So we load through our daily life and the industry and the agriculture application. So these emerging contaminants are emitted to the wastewater, to the flue gas. However, the current over the wastewater trading plants or the flue gas purification facilities cannot effectively control these compounds. As a result, emerging contaminants enter into the water, air, soil and other environments. So we are living in the ocean of the emerging contaminants. Every day we are exploring the emerging contaminants through the water, air, skin and also food. So this is quite high the risk. So how to control the emerging contaminants to building a long tactical and more healthy environment is a big challenge for all the countries. It's not only for developing countries like China, also for all the developing countries and also for the United States. In the past decade, we developed, we call it Kanban technology. We call it epoxy and other sharpness. So the use of this technology tried to control the emerging contaminants, reduce the emission from the wastewater, remove them from the surface water and guarantee our drinking water free of this emerging contaminants. In the first part of this Kanban technology, the epoxy can generate hydroxide radicals. These hydroxide radicals have a strong oxidation capacity. So they can oxidize the emerging contaminants. So on the surface of our new development of the nanomaterials, these emerging contaminants continuously degraded it. So the harmful chemical groups are gradually degraded to the long tactical chemicals. So in the second part of the this Kanban technology, we developed some new nanomaterials. One is molecular imprinting. Another one is we call it the metal organic framework materials. So we use these materials. They can control the emerging contaminants. So this is a kind of the molecular imprinting nanomaterials because according to the different of the emerging contaminants, they are the properties. So they can selectively absorb and remove the emerging contaminants. So then they reduce the risk from the environment. So now we use these nanomaterials in the real water. So we got very good results to remove the different kinds of the emerging contaminants. So then can reduce the risk. So how to skin up is very important. So we step by step. So from the laboratory scale to the pilot scale, and currently we have completed the field study units with the capacity for the 20 to 10th per day. So that's very important for the future application. So in summary, this combined technology can very good control the emerging contaminants in who the processes. Firstly, reduce the emission from the wastewater, and then remove from the receiving the surface water. So guarantee all the drinking water free of this emerging the contaminants. The one biggest challenge current is how to deal with the so many categories of the emerging contaminants. We know different of the category of the emerging contaminants. Their property is different. Also near the risk is different. So use one combined technology how to deal with so many. That's a problem. A lot of the challenges is cost issue. So currently the construction fee and operation fee is quite high. So how to reduce the cost toward reasonable and accessible cost range. I think that's very important for the commercialization in the future. So finally, to control the emerging contaminants, to building non-toxic environments. This is a very hard task for the human being. So in China, I think we have to deal with them for quite a long time. Maybe a decade or several decades. Thank you very much.