If it was April first, (all fools day) I would have been highly suspicious of this bit of news.
The Chinese, demonstrating the need to improve public hygiene, have decreed that there must not be more than two flies at any one time in public toilets. Not being familiar with Chinese public toilets I am unable to assess what improvements this might make, apart, of course, there being a limited number of flies bothering any one individual who feels the urge to relieve themselves.
Thinking about how a reduction in flying flies might be achieved is another mind boggling aspect, which was not touched upon in the announcement. Would this health and hygiene requirement provide extra employment? Perhaps training for fly swatters is taking place across the many miles of China as I write. The swatting hordes could descend where needed at any given time.
The simplest way to execute most flies, in all probability, is to install equipment like glue boards, or 'Insectocuters', like those we see in restaurants and kitchens. They spit every time they score a success. I would guess that the Chinese make the technology for export. But would they employ it for their own services?