(c) Read only paragraph 1 of the Strategy Page report, because only this paragraph is about the artillery.
(i) "Taiwan could, and did, and has kept four M1s (which it calls 'Black Dragon') operational ever since."
240 mm howitzer M1 https://en.wikipedia.org/wiki/240_mm_howitzer_M1
(popularly nicknamed the "Black Dragon", was a towed howitzer; was the most powerful weapon deployed by US field artillery units during World War II, able to fire a 360 lb (160 kg) high explosive projectile 25,225 yards (23 km) )
It is Americans, not Taiwanese, which christened the gun "Black Dragon."
(ii) As I say, you should not waste time reading the rest of Strategy Page report. But if you do, there is an error in the following.
"in 2009 China and Taiwan agreed to hold a long range swim each year, between the mainland and one of the small Taiwan controlled islands, just off the mainland coast. This event features fifty swimmers, each from Taiwan and China, going 8.5 kilometers from the mainland (a beach on Amoy Bay), to Little Kinmen (called Quemoy in the West) island. Each year the race changes direction."
The "qu" is pronounced "k" in both Spanish (eg: por qué, meaning "why") and Portuguese pronunciations. (An example of the latte is Mozambique (Portuguese: Moçambique; independent from Portugal in 1975).)
(B) 烈嶼鄉 https://zh.wikipedia.org/wiki/烈嶼鄉
(又稱小金門; 位處於福建省東南隅的九龍江口外、廈門灣內)