"On a simple level, you can use sheets or covers over areas where things might be damaged. You can put wax coating on things like brass so that the urine doesn't damage it."
The 'magical' blue flower changing farmers' fortunes in India
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"Mass crowds at stadiums and cultural sites place immense strain on mobile networks," says Gareth Elliott, director of policy and communications at trade association Mobile UK, "often exceeding local capacity as thousands share limited bandwidth simultaneously."
「解放軍正陷入混亂，」亞洲協會政策研究所的萊爾·莫里斯（Lyle Morris）告訴BBC，僅剩習近平和一名軍委委員的情況是史無前例的。