The Spread Shot of Chen from the world with a never-ending winter (a Touhou LW original). She casts a spell by walking in a special manner. The notion that magic can be used by walking in certain ways stems from China. Spirit energy flows beneath the Earth and by stepping on the ground, you can influence that flow, allowing you to ward off evil spirits and ease the passing of deceased souls. Chen is a cat, so it seems she's adept at casting spells with her walk. It's said that henbai movement patterns are used in sarugaku, a type of Japanese theater.

The Focus Shot of Chen from the world with a never-ending winter (a Touhou LW original). She uses an ancient magic ritual in this attack. Yin, yang, and the five phases are the foundation of shikigami magic. However, this world's Chen is more skilled at using her beast youkai body to perform acrobatic youjutsu. Or at least, that's what she thinks. Regardless, Ran would likely prefer Chen to use shikigami magic, even if that proves more difficult...

A Spell Card of Chen from the world with a never-ending winter. She uses an ancient form of divination in this attack. It's said to perform kimontonkou, you require a tonkouban. However, it doesn't seem like Chen owns one, so perhaps she makes up for that by using her powers as a shikigami. A tonkouban is similar to a dial or meter, so she probably created a mathematical simulation. All that to say, kimontonkou is an extremely fitting technique for a shikigami to use.

A Spell Card of Chen from the world with a never-ending winter. She borrows Bishamonten's power in this attack. Bishamonten is the ruler of the yakshas and rakshasas. There's a theory stating well-known types of youkai, such as tengu, kappa, and oni, partly originated from yakshas and rakshasas. Bishamonten is powerful enough to rule over both, and he was likely depended on as a guardian deity by those who trained in the mountains. The place where Chen resides, Mayohiga, is probably on the Youkai Mountain, so maybe this attack is necessary for her to live in peace.

The Last Word of Chen from the world with a never-ending winter (a Touhou LW original). Chen commands twelve shikigami in her own unique way. Many inhabitants of this Chen's world have been strongly influenced by flowers or snow, perhaps because of the incident's prolonging. However, Chen is unique even among those unaffected. Her temperament has remained relatively balanced, which may be due to her frequently traveling between the Netherworld and the world of the living. Moreover, as a result of her maintaining balance between the Five Phases, it appears she's now able to use shikigami techniques far beyond her original capabilities. It's said to become a shikigami, you must be a beast youkai, and this world's Chen has a Last Word that allows her to temporarily command twelve of them. Perhaps she's on the way to becoming a powerful, fully-fledged shikigami user...