A Certain Knowledgeable Wiki [Code Vader/Unknown Actor] (Wiki)

Li mei Xiaodan

Aura Storm
Li Mei's AIM is capable of releasing a phenomenal substance of radiation. Which becomes a visual cloak of vibration of Aura. That sports a crystalline build with hues of animated rainbow color blend.
Depending on her emotions is basis to the hue color texture, this might hint as a difference in effects depending on color.
She shown capable sparking up her Aura in a form of a charge.

Li Mei's possibles might have a larger set of Variations on ranks of a level 5. Li Mei had her esper ability before coming to Academy City only meaning shes a (Gemstone Esper).
After mysteriously leveling up quickly within the short time span of 1-2 months.
Her abilities are studied and hypothesis unnatural to the physics of Science while being capable to improve through science. Li Mei's capabilities are limit to her emotions while only having access to certain abilities set emotions. She is unable to use which technique on will, having power of scale of a level 5 but unable to use them unless she could maintain a clear mind which she shown incapable of doing in most occasions. Resulting in her failing her promotion exam from the board director Kaneshiro, being only a level 5 candidate like others among Academy City.

Limerence Potential
Name after Principal Kai's assistant, Limerence Potential is a trait that manifested within Aura Storm upon Li Mei's developing a crush for Tedashii Hamasaki, as long as she retains these feelings the faster she can develop in herself for the influencer, Li Mei's abilities strength when near Tedashii. She can boost a fast growth. The claim growth goal is that of Mikoto Misaka & the desire of its manifest Tedashii Hamasaki.
reaching level 2 in four days, and eventually level 4 in two months.
Confirming the secret fast growth in her level, Li Mei is however unaware of her fast growth and believes she earn her level with hard work alone.

• Aura Reading: Li Mei can perceive and read auras, normally invisible fields of energy that surround every living thing; this can be used to see a target's emotions, health status, power level, or moral alignment. She first shows this ability in Code Vader chapter 9 questioning and claiming Tedashii's mysterious habit to scratching his head to be a phenomenal side effect.

• Aura Cannon
Li Mei looses a blast of aura power from deep within her body, with one hand the balls are much small but can rapidly conjure quickly. With two hand the ball is a bit bigger and conjuring up aura takes bit longer in a charge. This ability can be use regardless of emotions however the effects are determined by her status
Depending on her emotion
• Excited: it explodes as an after effect showing in the balloon hunter event.

•Aura Construction: Li Mei can construct her aura into a solid object, in this state it can be use to block off other esper attacks as a shield acting as a AIM rod, Showing when she shield Tedashii from an multiple esper attacks during the ballon hunter event. This technique requires concentration and a clear mind and is reason that she specifically craft spoons from small to large. This is shown capable of intercepting calculations of esper powers.

Wisdom King
In Toaru Kagaku no Code Vader Kaneshiro confirmed that Li Mei is the vessel of Wisdom Kings, possibly identifying how she became an esper without the power curriculum program, Kaneshiro believes that Aura Storm is a Storm seal for the wisdom king (but possibly not true and could just be Li Mei's ability she would have learn naturally during power curriculum program)

Heruka (Form)
Heruka State (khrag 'thung) form also known as Wisdom King state, is a attained state of power taking the form of certain wisdom king that dwells within the vessel user of the Wisdom king. Exclusive to Li Mei Xaiodan this form is fuse with Aura Storm and wisdom. This power can only be trigger with a sage persona emotion even when angry as long as that angrier was build off the passionate care of someone else the state can also be enter in a calm state with a build good heart, the trigger is enter once Li Mei shouts out Heruka (He•ruk_a) in deity tongue.