Some 10 different languages will be heard during the final, including Albanian, Slovene and - for the first time since 2001 - Lithuanian.
It was reported that Ryan O'Shaughnessy's song Together was cut out of the Mango broadcast because it includes two men dancing together.
Rainbow flags were blurred out at other times in the Mango broadcast, according to the BBC.
That in itself is perhaps the biggest of China's diplomatic blunders; while Eurovision fans famously embrace inclusion, they also revere few things as much as the competition's much-loved, if slightly antique, scoreboard. But the severity of the ban is surprising given the perceived value of expanding the Eurovision brand into Asia broadly and into China specifically. "A great Eurovision song is simply a great song".
Mango is owned by government-controlled Hunan TV, but it wasn't immediately clear if it made the cuts on its own or at the direction of government regulators, United Kingdom newspaper The Independent reports.
This year marks the first time Azerbaijan, Romania and Russian Federation have failed to qualify for the grand final since 2004.
O'Shaughnessy said he was glad the EBU stood up for diversity.
"I would like to welcome the decision by the EBU to do that because from the very start we have just said love is love", said O'Shaughnessy.
The Eurovision Song Contest commands a global television audience of around 180 million.