DISCLAIMER: Shang Chi belongs to Marvel & Disney while Tekken belongs to Bandai Namco. I do NOT own anything, except OCs. Thank you.
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The trailer begins with a lone figure standing in-front of an abandoned dojo. The figure walks inside as he was in-front of a wooden dummy.

The figure reveals to be Shang Chi, open his eyes as he does the one inch fist strike to the wooden dummy.

ninjarider2 presents

It changes to Shang Chi woke up from the bed, does a push-ups.

Wenwu: I give you 10 years to live your life.

Shang Chi was seen walking, hanging out with his best friend & roommate, Asuka Kazama on their way to school.

Wenwu: And where did that get you...?

We see Shang Chi & Asuka hanging out in a club and the two had group picture with other students before switching to Shang Chi continue his one inch fist strike.

We see a young Shang Chi in training as the man in a Kabuki Mask looks to him.

Wenwu: You walked into my shadow.

It shows him in the Past, with Wenwu(clad in Black & grey) as the latter unleashed a powerful slam on the table created a shockwave, it changes of a young Shang Chi in a golden fighting clothes as he killed several enemies with his Kunai.

Wenwu: I trained you...

It changes of him being tested by whipping with wooden bo staffs as Wenwu looks on the window.

Scene changes Shang Chi walking on the to streets in a hoodie before switching a huge, broad man and his gang in the underground tournament.

Master:..so the most dangerous people in the world, couldn't kill you.

(Amon)

(Neel Shah)

(Zaheer(that man in the second) and others)

(Kuvira)

(Taskmaster)

...before changes to Shang Chi standing in the platform shirtless, ready for a fight.

Coming Soon!

Scene changes to a military-like dojo base where a helicopter landed as Shang Chi also came out from the helicopter, looks around in determination. Behind him was Wenwu(in white), Asuka, her rival Lili de Rochefort, a new boy in a cap named Guy Platinum & the same, huge broad man.

Wenwu: Son....

We see Jin Kazama(in a black suit similar from Tekken 7 game ending) standing on the rooftop of Violet System building while Ling Xiaoyu(wears her orange outfit from Tekken 7) and Lee Chaolan(in a violet purple business suit) were beside him on the right. On the left side beside hime was Lars Alexanderson(same outfit in Tekken 7), Alisa Bosconovitch(same outfit from Tekken 7) & Panda, Xiaoyu's pet(same outfit from Tekken 7).

Wenwu: It's time for you to take your place....

It changes to Kazuya Mishima(in a purple suit) is seen walking while he was devilishly smile as G Corporation soldiers saluting to him, Heihachi Mishima is meditating on the tower of the Mishima Zaibatsu he retaken as leader before he open his cold eyes....

Wenwu:...by my side.

...before it changes to the Mandarin, sitting on the throne. Behind him was the logo of the Ten Rings.

(The Mandarin)

We see a figure clenching his fist as several rings on his arm was glowed, Wenwu opens the door as water appears surrounding Shang Chi and others as he touches it before him meeting with Wenwu.

Shang Chi: That's not going to happen.

It changes to a Kabuki Mask Man on the helicopter looks below where Shang Chi is as the latter looks above before jumping and kicks Shang Chi, who managed to recover and fought back while catching a Kunai.

We see a woman in green kimono also wears a straw hat floating around the leaves, a warrior with a bo staff jumps over the ledge along with a tiger or lion-like creature, Taskmaster does a "X" arm pose before he kick someone.

It changes to Shang Chi got kicked by a Zaheer's female follower(the woman with a mark on her forehead) as she does a combat stance.

Wenwu: You can't outrun who you really are.

We see the same huge, broad man pulls out an energy-like sword dagger and attempt to slash Shang Chi but the latter dodge, Shang Chi fighting Amon as the golden masked figure jumps & kicked him before an ancient battle was shown.

We see Shang Chi riding a motorcycle as Taskmaster notched the explosive arrow to his bow before Shang Chi jumps to a pick-up truck as the explosive arrow created a blast on the street.

It change to inside the bus where Shang Chi double punches two thugs and side double kick them before he landed, shakes his jacket like a boss.

Camera turns to Asuka, Lili and other passengers look shock & disbelief.

Asuka: *serious but asking tone* Who are you?

Shang Chi:

A Title Card was shown and behind it was a Ten Rings logo.

Tekken: Legend of Shang Chi & the Ten Rings

We see the same bus is going to crash.

Shang Chi: *shock* Oh no.

Asuka was in the driver seat, step on the brakes of the bus.

Asuka: Hold on, everybody.

Everyone screams as the bus tried to brake itself as some cars and a truck appears and collided the bus on the road. As Shang Chi hold few passengers from falling out the bus while Asuka screams, the bus finally stops. Shang Chi looks around to see if everyone were okay.

Asuka: *smiles* We make a good team.

The screen turns black, ending the trailer.
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AND DONE! I added the villains from Legend of Korra and Taskmaster from Marvel. Also, several Tekken fighters including Heihachi & Kazuya Mishima are here and might have a rivalry not just them but the Mandarin as well.

I hope you like this one. Thank you.