Kim's grandmother Kim Jong Sook is being celebrated this week for her 'achievements' at the country's founding.
Gas stations close for a few days across a province bordering China, causing confusion and boosting prices.
Buildings damaged by the test may soon collapse, residents in a county bordering China fear.
US President Trump condemns the North as a "rogue nation" endangers the US and embarrasses China.
Private trade and smuggling continue, though, with some traders using boats to move their goods.