. >> thank you susumu koijima in beijing. >>> now in other news, animals in pet stores in japan will get a little more sleep at night, thanks to a new regulations. pet store owners will no longer be allowed to display their wares in brightly lit windows overnight. the revised law bans pet shop owners from subjecting dogs and cats to bright lights from 8:00 p.m. to 8:00 a.m. it ames to protect animals from possible health hazards resulting from such treatment. the government will delay implementing similar regulations at so-called cat cafes where cat lovers play and relax with cats. those businesses can continue to operate until 10:00 p.m. for two more years. the law also requires that for profit animal shelters and pet auctioneers register with their prefectural governments. this is due to hygiene concerns and difficulties tracing the medical records of pets sold at auction. >>> computer wizards from around the globe are competing to find out who is best at cybersecurity. they are headed to moscow for an annual contest called capture the flag. it may appear like fun and games but the

nhk world's susumu koijima takes us to a place where a tourism boom is threatening an important natural resource. >> reporter: one of the most popular tourist destinations in china is lijiang in yunan province. this asian town dating back some 800 years is now a unesco world heritage site. another popular tourist site is a nature reserve about ten kilometers from beijing. it's an important habitat with more than 70 species of birds. it is now listed under the convention for conserving wetlands. recently it's become popular with city people keen for a break from the pressures of life. >> translator: when i am here, i feel free from all the stress from my work and life. >> reporter: but there is growing concern about the rapid increase in the number of visitors. he set up an ngo nearly ten years ago to protect the environment around the site. chen is worried that the huge amount of garbage left by the tourists is affecting the lake's water quality. local restaurants are also dumping their garbage. plastic bottles, paper and leftover food are strewn all over the place. >> you see this glas