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I. Introduction
The Chinese Blade or Dao. During the Ming Dynasty, the sword type known as the pei dao began to become more widespread and used in more popular fashion amongst military units than other Chinese sword types, most notably the jian (generic term for a double-edged Chinese sword, most often used by Chinese nobility). The pei dao had evolved from the ancient Chinese dao, which could refer to any number of swords (or even domestic knives) in the style of a single-edged blade meant for slashing and chopping. Although the jian and some types of daos are more straight in appearance (like a European broadsword), the single-edged blade of the pei dao was more saber-like, used first by the Central Asian Turks who used the saber-style sword since at least the 8th century AD, adopted by the Mongols of the Chinese Yuan Dynasty (1279 -1368 AD), and then continued in practice towards the Chinese reestablishment of control during the Ming Dynasty (1368 - 1644). The style of the curved, single-edged blade for swords spread to other peoples as well, only with different names, for example, the Persian Shamshir, the Indian tulwar, the Afghani pulwar, the Turkish kilij, the Arabian saif, the Mameluke scimitar, and of course the European saber and cutlass.
Source PericlesofAthens at

II. Pros and Cons

Pros

-Attack Power
Lightning Flash is the bread-and-butter buff for Blades. Granting you 20%+ attack power, this buff will make grinding and PvPing much easier for you.

-PVP
Extra attack power grants you, obviously, more DPS in PvP. Having the highest damage output gives you the best potential for one-hitting.

-Training
Easy training, next to maybe Sword. Extra Attack power lets you take down mobs faster to save valuble time.

-Stat gains
STR=4.3 damage
DEX=5.14 chance to hit and 2.57 chance to dodge
VIT =15.31 hp
CHI =20 chi

Cons

-Money
In order for this build to reach it's maximum potential, you need the funds for skills, gears, materials, ect. The fact that Blades characters are common makes Blade weapons more expensive than Swords or Marbles.

-Boss hunting
No Kiting for you, you're melee. It means either get enough defense to tank to boss or don't take it at all.

III. Skill Build

The essential order on when to get your skills, core to the speed of your training and your performance in PvP. Now, I don't feel like putting how many points to add to a skill everytime you level, as that is an EXTREME hassle, and it's more messy for you to read. So, I've decided to make an entirely separate section for your skill build order. Here it is.

Legend:

{Learn} Learn Skill, do not raise skill level
{MAX} Raise skill level to maximum
{Raise to __} Raise skill level to __
{Book of Clear Fog} Erase Skill

1) {Learn} Heavenly Serenity
2) {Learn} Walk in the Clouds
3) {Learn} Gentleman's Pen
4) {Learn} Lightning Flash
5) {Learn} Fury Strike
6) {MAX} Gentleman's Pen
7) {MAX} Lightning Flash
 {MAX} Walk in the Clouds
9) {MAX} Finger of Darkness
10) {Learn} Soaring Dragon
11) {Book of Clear Fog} Gentleman's Pen
12) {Learn and MAX} Phantom Thunder
13) {MAX} Fury Strike
14) {Learn and MAX} Sunray Stroke
15) {Learn and MAX} Heavenly Blow
16) {Learn and MAX} Finger of Light
17) {Learn and MAX} Heavenly Shield
1 {MAX} Heavenly Serenity
19) {Learn and MAX} Heavenly Repulsion/Heavenly Destruction/Reverse Flow