Editing Mainland Southeast Asia (section)

== Geography ==
[[File:Koppen-Geiger Map v2 Southeastern Asia 1991–2020.svg|thumb|Climate of Southeast Asia]]
[[File:Mekong River in Laos (1490866472).jpg|thumb|300px|right|[[Mekong River]]]]

The Indochinese Peninsula projects southward from the Asian continent proper. It contains several mountain ranges extending from the [[Tibetan Plateau]] in the north, interspersed with [[Upland and lowland|lowlands]] largely drained by three major river systems running in a north–south direction: the [[Irrawaddy River|Irrawaddy]] (serving [[Myanmar]]), the [[Chao Phraya River|Chao Phraya]] (in [[Thailand]]), and the [[Mekong]] (flowing through [[Northeastern Thailand]], [[Laos]], [[Cambodia]] and [[Vietnam]]). To the south it forms the [[Malay Peninsula]], located on which are [[Southern Thailand]] and [[Peninsular Malaysia]]; the latter is variably considered part of Mainland Southeast Asia or separately as part of [[Maritime Southeast Asia]].{{citation needed|date=November 2023}} Most of it has a [[tropical climate]] except for [[subtropical]] places such as [[Northern Vietnam]].<ref>{{cite web |url=https://www.worlddata.info/asia/vietnam/climate.php |title=Vietnam Climate |website=WorldData.info |access-date=2023-11-24}}</ref>