You can choose a new class when you get reborn, so you will be able to learn new skills and still keep some learnt in the past life. Besides, reborn characters will obtain some special skills.
Reborn characters with any skills learnt in their past life can have an epiphany. The epiphany makes the skill leap, after it reaches to half of the former level before rebirth.

Note: The skills listed below are available only when you have learnt before rebirth.

Archer is reborn as...
Archer	Freezing Arrow (sometimes freezes the target)
Fire Taoist	Equip low-level bows, Poisonous Arrows
Trojan	Equip low-level bows, Poisonous Arrows
Warrior	Equip low-level bows, Poisonous Arrows
Water Taoist	Equip low-level bows, Poisonous Arrows
Ninja	Equip low-level bows, Poisonous Arrows
Monk/Saint	Equip low-level bows, Poisonous Arrows
Pirate	Equip Low level bows and arrows, poisonous arrows.
Note: The skill Poisonous Arrows is available when you are level 70+ and equipping low-level bow and arrows (both are under level 70).

Fire Taoist is reborn as...
Archer	Thunder, Fire, Cure and Meditation Spells
Fire Taoist	Dodge (Increase dodge for a time)
Trojan	Thunder, Fire, Cure and Meditation Spells
Warrior	Thunder, Fire, Cure and Meditation Spells
Water Taoist	Fire Circle Spell
Ninja	Thunder, Fire, Cure and Meditation
Monk/Saint	Thunder, Fire, Cure and Meditation
Pirate	Thunder, Fire, Cure and Meditation

Trojan is reborn as...
Archer	Cyclone, Spirit Healing & Golem XP Skills.
Fire Taoist	Cyclone, Spirit Healing & Golem XP Skills.
Trojan	Cruel Shade (consume stamina to deal 20% HP damage to enemies)
Warrior	Cyclone, Golem & Spirit Healing XP Skills. Iron Shirt (defense *4 for 20 seconds.)
Water Taoist	Cyclone, Spirit Healing & Golem XP Skills.
Ninja	Cyclone, Spirit Healing.
Monk/Saint	Cyclone, Spirit Healing.
Pirate	Cyclone, Spirit Healing.

Warrior is reborn as...
Archer	Shield and Roar
Fire Taoist	Shield and Roar
Trojan	Accuracy, Roar & Flying Moon
Warrior	Reflect (damage) back to the attacker.
Water Taoist	Superman, Shield & Roar
Ninja	Accuracy, Roar, Flying Moon
Monk/Saint	Accuracy, Howl, Flying Moon
Pirate	Accuracy, Roar, Flying Moon

Water Taoist is reborn as...
Archer	Cure, Invisibility, Magic Shield, Stigma & Meditation Skills
Fire Taoist	Revive (XP skill), Advanced Cure, Invisibility & Healing Rain Skills
Trojan	Cure, Star of Accuracy, Magic Shield, Stigma & Meditation Skills
Warrior	Cure, Star of Accuracy, Magic Shield, Stigma & Meditation Skills
Water Taoist	Pervade (Spend stamina to continuously attack enemies within range)
Ninja	Cure, Star of Accuracy, Magic Shield, Stigma and Meditation
Monk/Saint	Cure, Star of Accuracy, Magic Shield, Stigma, Meditation, Water Elf, Divine Hare
Pirate	Cure, Star of Accuracy, Magic Shield, Stigma, Meditation

Ninja is reborn as...
Ninja	All skills of Ninja will be reserved.
Warrior	Toxic Fog
Trojan	Toxic Fog
Fire Taoist	Toxic Fog
Water Taoist	Toxic Fog
Archer	Toxic Fog
Monk/Saint	Toxic Fog
Pirate	Toxic Fog

Monk/Saint is reborn as…
Monk/Saint	All Monk/Saint skills
Warrior	Serenity
Trojan
Water Taoist
Fire Taoist
Archer
Ninja
Pirate

Pirate is reborn as…
Pirate	All pirate skills
Warrior	Gale Bomb
Trojan
Water Taoist
Fire Taoist
Archer
Ninja
Monk/Saint