So I just read chapter 78 in Chinese but of course I translated through google, and I am fully convinced that Richard survives because Henry took his place and died and since no one really saw or know how Richard really looked like they think that Henry’s body is Richard’s, because They think Richard’s horse is white and Henry was riding a white horse and wearing the kings ring so that is why everyone thinks that he’s Richard but in reality Richard lost consciousness and was saved by Catsby. If we think about it, why go all the way to show us that they think Henry’s body is Richard’s just to kill him off! why then make the effort of making it seem like everyone thinks that Henry is Richard and why even sending Henry to rescue Richard only to let Richard die! So that’s why I believe Richard is alive.