Here is a question about this article: The Slovenian countryside displays a variety of disguised groups and individual characters among which the most popular and characteristic is the Kurent (plural: Kurenti), a monstrous and demon-like, but fluffy figure. The most significant festival is held in Ptuj (see: Kurentovanje). Its special feature are the Kurents themselves, magical creatures from another world, who visit major events throughout the country, trying to banish the winter and announce spring's arrival, fertility, and new life with noise and dancing. The origin of the Kurent is a mystery, and not much is known of the times, beliefs, or purposes connected with its first appearance. The origin of the name itself is obscure.
What is the answer to this question: What do the Kurents try to banish?
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So... winter

Here is a question about this article: Seismology: To better prepare for calamities, Zhang Heng invented a seismometer in 132 CE which provided instant alert to authorities in the capital Luoyang that an earthquake had occurred in a location indicated by a specific cardinal or ordinal direction. Although no tremors could be felt in the capital when Zhang told the court that an earthquake had just occurred in the northwest, a message came soon afterwards that an earthquake had indeed struck 400 km (248 mi) to 500 km (310 mi) northwest of Luoyang (in what is now modern Gansu). Zhang called his device the 'instrument for measuring the seasonal winds and the movements of the Earth' (Houfeng didong yi ), so-named because he and others thought that earthquakes were most likely caused by the enormous compression of trapped air. See Zhang's seismometer for further details.
What is the answer to this question: What was invented in 132 CE?
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So... a seismometer

Here is a question about this article: UN aerial reconnaissance had difficulty sighting PVA units in daytime, because their march and bivouac discipline minimized aerial detection. The PVA marched "dark-to-dark" (19:0003:00), and aerial camouflage (concealing soldiers, pack animals, and equipment) was deployed by 05:30. Meanwhile, daylight advance parties scouted for the next bivouac site. During daylight activity or marching, soldiers were to remain motionless if an aircraft appeared, until it flew away; PVA officers were under order to shoot security violators. Such battlefield discipline allowed a three-division army to march the 286 miles (460 km) from An-tung, Manchuria, to the combat zone in some 19 days. Another division night-marched a circuitous mountain route, averaging 18 miles (29 km) daily for 18 days.
What is the answer to this question: When would PVA forces march to minimize the chances of being seen?
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So...
19:0003:00