Starting from issue 270 (July-August 2011), in response to the trends of the internet age and environmental protection, we will switch to online distribution and will no longer send out bimonthly print publications . Let us work together to protect the earth!

Starting from July 2022, the bimonthly magazine will be changed to a quarterly magazine . The last issue of the bimonthly magazine will be No. 275 in May and June, and the latest issue of the quarterly magazine will be No. 276 in July, August and September. Please pay attention to the release time.