Iron Arm Divine Fist

Legend has it that this martial art was the specialty of "Mountain-Boring Rat Xu Qing", third among the Five Heroes of Xiankong Island.
Xu Qing was a blacksmith by trade, possessed of boundless strength and a strange art that let him burrow through the earth, hence the name Mountain-Boring Rat. The Five Rats submitted to Kaifeng Prefecture and aided Bao Zheng.
In the seventh year of the Jiayou era, Lord Bao died of illness, and the following year he was buried in Hefei. The Five Rats escorted him all the way, kowtowed their farewells, and went their separate ways.
Afterward Xu Qing retired to Kongtong, where he passed down the Iron Arm Divine Fist and his blacksmithing craft, and died at the Iron Fist Alley Great Ironworks.
Those who train in it must oil their arms, slip on iron rings, circulate qi until their arms swell and harden, then swing them with all their might at wooden stances; once the wooden stances are smashed, they move on to stone stances; once the stone stances are smashed, to iron stances. If it is an arm that breaks instead, they apply ointment and keep swinging once it heals, until in time their hands become as hard as iron.
Effects
| Level | Effect | Martial Points |
| LV1 | Fist and Palm 1 | 5 |
| LV2 | Fist and Palm 2 | 1 |
| LV3 | Fist and Palm 3 | 2 |
| LV4 | Fist and Palm 4 | 3 |
| LV5 | Fist and Palm 5 | 4 |
| LV6 | Fist and Palm 6 | 5 |
| LV7 | Fist and Palm 7 | 6 |
| LV8 | Fist and Palm 8 | 7 |
| LV9 | Fist and Palm 9 | 8 |
| LV10 | Fist and Palm 10, Iron Arm Flying Fist | 9 (50) |
- Iron Arm Flying Fist: At Realm 2 or above, the Ultimate becomes [Iron Arm Flying Fist], inflicting [Shock] (enemy Defense −50%, 1T)
Acquisition Method
- Year 2 studying at the Kongtong Sect - Enter the Mystic Skill Gate, choose the Iron Fist Gate Secret Manual
- Year 2 studying at the Kongtong Sect - Win the Iron Fist Gate Seasonal Trial
- Year 2 studying at the Kongtong Sect - Kongtong Expedition Daily Life event reaching the Mystic Skill Scripture Cave, randomly obtained when rolling ≧90 Xiaomei
- Mid Oct Year 2 - Fourth Senior Brother buys items ($1200)