I'm not sure if there are any existing rules that I could use, and if their are I am not sure they are forum-friendly. I shall research them, and come back later. Until then, discuss and offer suggestions to this mess of a page.

Right now all I got is a player allocates points to attributes (Mind, Body, Spirit, Focus, Discipline), which determine their health, melee damage, ranged damage, defense, and ability to channel Chi.

Each character also knows a certain 'style', and these styles offer bonuses in combat. Some styles may offer defense bonuses, while others offer melee bonuses. Some might greatly increase melee damage but greatly reduce defense. Some styles are useful against others, while some styles are balanced.

Techniques are the skills and abilities of a character. Every character can use a standard attack, but they can deal the most damage using skills and Chi abilities. Some of these Techniques can allow a character to attack two, three, or even four times a turn. Other Techniques might allow them use Chi to heal their allies, inflict damage on enemies, buff their friends, etc.

In a single turn you may:
Engage - Choose an opponent to fight; you may follow this up with an attack, and certain skills/abilities.
Disengage - You may disengage from an opponent, but without certain skills/abilities you will take damage.
Attack - A normal attack against an opponent.
Use Skill/Ability - Instead of attacking, you may use a skill or ability; some allow you to use a normal attack as well.
Channel - You generate Chi overtime, but using this will greatly increase the amount of Chi you generate this turn.
Change Style - Change your style to receive a different buff.

I'm not sure if there are any existing rules that I could use, and if their are I am not sure they are forum-friendly. I shall research them, and come back later. Until then, discuss and offer suggestions to this mess of a page.

Right now all I got is a player allocates points to attributes (Mind, Body, Spirit, Focus, Discipline), which determine their health, melee damage, ranged damage, defense, and ability to channel Chi.

Each character also knows a certain 'style', and these styles offer bonuses in combat. Some styles may offer defense bonuses, while others offer melee bonuses. Some might greatly increase melee damage but greatly reduce defense. Some styles are useful against others, while some styles are balanced.

Techniques are the skills and abilities of a character. Every character can use a standard attack, but they can deal the most damage using skills and Chi abilities. Some of these Techniques can allow a character to attack two, three, or even four times a turn. Other Techniques might allow them use Chi to heal their allies, inflict damage on enemies, buff their friends, etc.

In a single turn you may:
Engage - Choose an opponent to fight; you may follow this up with an attack, and certain skills/abilities.
Disengage - You may disengage from an opponent, but without certain skills/abilities you will take damage.
Attack - A normal attack against an opponent.
Use Skill/Ability - Instead of attacking, you may use a skill or ability; some allow you to use a normal attack as well.
Channel - You generate Chi overtime, but using this will greatly increase the amount of Chi you generate this turn.
Change Style - Change your style to receive a different buff.

Why not check out Dungeons and Dragons - the Fifth Edition rulings?

<Snipped quote by TJByrum>

Why not check out Dungeons and Dragons - the Fifth Edition rulings?

I wouldn't be sure it'd convert to a martial arts idea to well.

HeroScape is cool, so I'm just gonna drop this right here in case I want to use it later:

1. Character Cards
Everyone fills out a character card. Characters are classified as Heroes or Squads, but we will use Heroes for the duration of this example. Heroes are powerful individuals with powerful skills and abilities.
Name: Your character's name.
Health: The number of wounds a character can take before being incapacitated.
Strength: This value gets added to your Total Attack Value when you attack someone in melee.
Precision: This value gets added to your Total Attack Value when you attack someone with a ranged weapon.
Magic: This value gets added to your Total Attack Value when you attack someone with magical powers.
Defense: This value is added to your Total Defense Value when you are defending against an attack.

2. Skills/Abilities
Each character has skills and abilities to help them attack, defend, move, buff allies, and hinder opponents.
Flying - Characters can fly do not suffer from movement penalties when crossing water or climbing terrain. They can also pass over other characters without becoming engaged.
Disengage - This ability allows a character to move away from opponents without taking a disengagement penalty.
Special Attacks - A Special Attack ignores the common attributes on a character card and instead give you substitutes. For example, a Shaolin Monk may have an ability that gives him +3 Attack whereas he might normally have +2. Special Attacks usually prevent you from moving and making normal attacks during your turn, and are considered to be signature moves.
Enhanced Normal Attacks - Some skills and abilities let you make normal attacks, with an added bonus. For example, you might be able to make two, three, or even four normal attacks in a single turn. Normal attacks use your base stats.
Bonding - Bonding lets you move/use other characters in combination with this character. So a Samurai Lord might bond with Samurai Retainers, and so he can move/attack with the Retainers and then move/attack with his Lord. It effectively lets you make two moves in a single turn.
Others - There are many types of special skills and abilities available to characters. Research would need to be done for you to fully understand them.

3. Gameplay
On your turn, you may move your character up to 4 spaces (certain skills might change this). If an opponent is within your line of sight and within range, you may attack them. Roll die; add your respective values; compare.

Reading all this I couldn't help but think of Jade Empire. Hope it works out, I think its a really cool idea.