History of Tiananmen Square

Note that in this case, you either need a literal argument {{}} or to explicitly escape the # character as in: to avoid the creation of an insane topic link with a single word.

Also note that Wikipedia subsections are not completely stable, so generally you would rather want to link to a permalink with a full URL as in: Note that in this case escaping the # is not necessary because it is part of the insane link that starts at https://.