 how can we value the urban polis, urban polis in Korea? So actually, today before yesterday, I've presented under particular methods, those networks in our countries, but today I'd like to mention some valuation and what I'd like to suggest, what is the standard statistics in Asian regions. I think we need to make some standard statistics. Actually, I'm a governmental researcher. So actually, last month, we received a question from the parliament, parliament's politician, why WHO, actually World Health Organization, WHO designated as the 15 square meter, nine square meters is a minimum standard, and 15 square meters is some proper standard. So what is the source of that figure? So it was a very question. So actually, I'd like to share with you, I'd like to know who are there anyone who knows what is the data source under the nine square meter and 15 square meter. And I will start my presentation with a question on the WHO standard. So maybe you can see this many times. So actually, now 70 years ago, our Korean peninsula was destroyed and denuded like this, but the Korean government had embarked on the national project like this. So it's many, many celebrities they mentioned and successful rehabilitation in Korea. So also we in Seoul area, 70 years ago, in 1955, the landscape was denuded like this. But in nowadays, there's a green and gray. I think I called it the harmony between green and gray. So I think it's not so good place to live up to habitat for birds. Also, but I live in Seoul. Yes, I'll skip. And actually, I'd like to mention the definition of the urban forest. So in Korea, in Seoul, we define the what is the urban forest. So we call it forest and trees. And we in outer parts areas, as you say, some very urban areas, very urban areas dominated by big mountain areas like this. So we call it in rural area, but it's some very urban areas dominated by this forest area. But in the center of the urban is highly dominated by residential and some central business districts. So it is very difficult to compare the green space among Asian countries. So I think we come to know or we should designate what is the definition of the urban forest in Asian regions. So actually, 2019 in Korea, all over the world, all our country, all over the country, is the green area per capita value is 11.51 square meter. So minimum requirement more than nine square meter, but under the 15 zero square meters. So but I do not know what is the data source and the minimum requirement and the proper recommendation. Still, I do not know. Yeah, so also, when we compare the each cities from China, Japan, and U.C. cities, I think it's the cultural status and some political states are very different. So it is very unreasonable to compare which countries are more green. Of course, it's lower green. I think it's not. So but some scientific analysis of the green space is very important to know the value and to know the to increase the enhanced value of the urban forest. So in poor, wheelchair cities. So actually, I mentioned that Wang and Liu 2017, I cited this result and in Japan case, I cited the OECD result. Also, it is very difficult, but this Asia Pacific urban forest I think we can make some scientific, small meeting to make some standard or the definition and some statistics. So in Korea, actually, we divided some very urban forest as a landscape forest, very urban forest and the park forest. Also, street trees is very important. Also, pocket groves are very small, one meter by one meter, only just one square meters, very small, but it is a very important place. So small pocket groves and school green are also important, but we have no in calculating the total statistics in our country. This small groves and small school is not included. So if we conduct some satellite image analysis, it is very easy, but some areas are very restricted to understand and to calculate the green areas in these areas. Yes, like this. So as I mentioned, maybe two days ago, in Korea, in Seoul and in metropolitan cities, we want to design, design, design the ecosystem service urban forest like this. So regulation part is very diverse criteria and some provision is very small, but in Asian regions, actually Malaysia and Indonesia and dead areas, this provision service will be important. So it is depending on the cultural status of the cities. So actually, in Korea, actually, previous maybe 10 years ago, some top down disciplines like this green node, green leaf or vertical green, green shelter, green loop is some government policy. But now it's some market policy, market, market drive, the trends are popular. So three delivery service, the urban region or urban bees and companion trees. This part is some bottom up process and this is a top down process. So now, I think it's some paradigm change time in Korea. The change of the paradigm is now occurred in some metropolitan cities. Yes, I will skip. And actually, I'd like to mention this. So in Korean Peninsula, we calculated some access to the green space. So usually we compare the like the area of the green space, but I think it's time to compare the access to the green space. So if we hypothesize the four kilometer per hour, four kilometer speed, walking speed, so 15 minutes, what is the nearest distance from the people until in the 15 minutes is very important to calculate to assess the access to the green space in Korea. So we just tried to do this. Yes. Actually, that is all. And I'd like to share, I'd like to present some sounds of birds. Yes, this bird also you can, yes, English name is a winter rain. I call it is a sedanale in urban forest. It's a very beautiful song, wonderful song. So if we well care and preserve the urban forest, we can share this song.