James Harden hosts Michigan State shooting survivor John Hao for Celtics-76ers Game 4

James Harden hosted a special guest for Sunday's Game 4 between the Boston Celtics and Philadelphia 76ers.

Michigan State student John Hao, who survived the on-campus mass shooting in February that killed three students, watched the game as Harden's guest. Hao, 20, was shot in the attack and left paralyzed from the chest down.

Harden found out that Hao is a big fan of his and reached out to him on FaceTime while Hao was receiving treatment in a hospital. He contributed to Hao's GoFundMe for medical expenses and sent him a pair of his game-worn shoes. He also promised to invite him to a 76ers game. On Sunday, he made good on that promise.

Hao was released last week from the hospital and showed up in Philadelphia for Sunday's game. He watched courtside from the baseline during 76ers warmups, where he shared a hug with Harden.

He then watched the game with his loved ones from the stands.

ESPN's Cassidy Hubbarth reported that Harden also intends to give Hao his shoes from Sunday's game.

"There's so much craziness going on in the world, and nobody should go through what John has gone through," Harden told ESPN. "To have even an imprint during his recovery, to give him some joy back, I feel is my calling.