Of course, there are other ways.
Some special items can also tame mounts, like beast-taming ropes and such.
These things are usually only obtainable through certain quests.
Jiang Chen doesn't have any of these items right now, so he has only one option: beat up the unicorn.
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Urban / Drama
Island Survival: I Became the Only Bodyguard on Death Island
Mature / Drama
Rebirth: I Turned Spider Man Into an Executioner
Sci-fi / Mature
Global Stat Points: I Maxed Out Attack Speed
LitRPG / Urban
After the World Became a Game I Chose Black Talent
LitRPG / Mature
LitRPG: I became the God of Mining
LitRPG / Xuanhuan
Endless Escape: I am the King of Vehicles
Harem / Sci-fi
Virtual Ascension: Awakening the Supreme Talent
LitRPG / Xuanhuan
I Ascended, Only to Return to Earth?
Urban / Xianxia