The 10-year anniversary of the Malice at the Palace is Wednesday, and Metta World Peace is commemorating it with a new book.

But in promoting “The Untold Story of the Malice at the Palace,’’ World Peace told The Post in an interview from China some malice that occurred in the Knicks’ locker room last season is possibly why he is not on the team this season, helping them run the triangle offense.

With World Peace’s knee healthy as he plays in the Chinese Basketball Association for the Sichuan Blue Whales, and the Knicks flailing with their new offense, team president Phil Jackson may have blown it in not bringing back World Peace for a redo.

However, the Queensbridge product thinks he knows why.

“I’m too direct,’’ said World Peace, who will return from China in March and may try to sign with a contender such as the Clippers.

The former Ron Artest disclosed he and J.R. Smith had a heated incident in the locker room after a game last season because World Peace was trying to get Smith to play harder on defense.

World Peace’s agent, Marc Cornstein, spoke to the Knicks during the summer, and World Peace reached out personally to Jackson, who never returned his phone call.

“I don’t understand why they didn’t [sign] me,’’ World Peace said. “But then again, I’m very direct. I think I was too direct in the locker room, too direct to J.R. Smith. It wasn’t from a bad place. I’m older, been on great teams in Sacramento and L.A.

“If someone is not playing defense or not giving effort, that’s my specialty. I don’t hold back on my words. Nobody wants to talk direct to them. We don’t give it to them straight.

“I said some things directly to J.R. Smith in the locker room and he challenged me back, said some direct things to me. But he understood where we came from.”

World Peace battled a swollen knee last season. Even when healthy, former Knicks coach Mike Woodson, who viewed Smith as the son he never had, kept World Peace in the doghouse. The Knicks waived World Peace after the trade deadline.

According to World Peace, on one occasion, owner James Dolan walked into the film room for a bull session. World Peace said he was the only player to speak up about why the team was in disarray.

“You don’t hold nothing back when things are going wrong,’’ World Peace said. “You have to tell Melo [Carmelo Anthony] when he’s being lazy. You have to speak about these things, so when the playoffs come, everyone knows where everybody stands.’’

As an American playing in China, World Peace is allowed to play only two quarters, and is averaging 20 points per game.