Answer based on context:

The fighting between Ayutthaya and Lan Na resumed between 1494 and 1530. During this period, Lan Na constantly raided their neighbors to their south while Ayutthaya repeatedly mounted invasions in retaliation. Ramathibodi II became king of Ayutthaya in 1491 and ruled until 1529. He instituted compulsory military service to help fight his wars. The Burmese-Siamese War in 1547-49 was inconclusive. A much more dangerous threat developed when Bayinnaung became king of Burma in 1551. Starting in 1563 Bayinnaung conquered both Lan Na and Ayutthaya. The Burmese were not ejected until the Thai revolt of 1587.

How many years after he became king did Bayinnaung begin the conquering of Lan Na and Ayutthaya?
2
Svar baserat på sammanhang: Striderna mellan Ayutthaya och Lan Na återupptogs mellan 1494 och 1530. Under denna period gjorde Lan Na ständiga räder mot sina grannar söderut medan Ayutthaya upprepade gånger satte in invasioner som vedergällning. Ramathibodi II blev kung av Ayutthaya 1491 och regerade fram till 1529. Han instiftade obligatorisk militärtjänst för att hjälpa till att utkämpa sina krig. Det burmesiska-siamesiska kriget 1547-49 var oavslutat. Ett mycket farligare hot utvecklades när Bayinnaung 1551 blev kung av Burma. Med början 1563 erövrade Bayinnaung både Lan Na och Ayutthaya. Burmeserna blev inte utkastade förrän vid den thailändska revolten 1587. Hur många år efter att han blev kung började Bayinnaung erövra Lan Na och Ayutthaya?
Response based on context: The battles between Ayutthaya and Lan Na resumed between 1494 and 1530. During this period, Lan Na made constant raids on his neighbors south while Ayutthaya repeatedly deployed invasions in retaliation. Ramathibodi II became king of Ayutthaya in 1491 and reigned until 1529. He instituted compulsory military service to help fight his wars. The Burmese-Siamese War 1547-49 was unfinished. A much more dangerous threat developed when Bayinnaung became king of Burma in 1551. Beginning in 1563, Bayinnaung conquered both Lan Na and Ayutthaya. The Burmese were not ejected until the Thai revolt in 1587. How many years after he became king did Bayinnaung begin to conquer Lan Na and Ayutthaya?
2
2