In Qinchuan against mysterious girl:
Try to use the item "No-parting candy" picked in Misty Mountain Stream.

In Iron Pillar Temple against the wolf fey:
Recommended level:20
1.Reset Baili Tusu's Astrototem. All add DEX.
2. In the second stage, throw out the item "Dragon Whisker Hook" once the wolf uses his skill "Burning Sky".
3. Prepare enough recovery items.
https://youtu.be/qAp-Ee275FM

In Serenity Estate against the ghost lady:
Fang Lansheng must be on the battlefield! The ghost lady will only attack Fang Lansheng when he is on the battlefield. If Fang Lansheng is not on the battlefield, the ghost lady will keep casting instant death spell until Lansheng comes out!

In the Mausoleum of the First Qin Emperor:
Recommended level:30
1. First stage: Pay attention that one disciple is 5-element immune, and the other two are physical damage immune. Control the three disciples to low HP, and at last kill them in the same round, or they will continuously summon more.
Use Tusu's Fire sorcery "Flying Flame" to attack those two physical immu, and use Qianshang to attack that 5-ele immu one.
Xiang Ling's skill "Money Rain" is neither physical damage nor 5-ele damage, so it can attack all three at the same time with big damage (if you have enough money...)
Try using Xiang Ling’s skill “Divine Fox Illusion” (Wear the golden earrings to add Luck attribute for Xiang Ling will greatly increase the damage of this skill)
When Tusu’s HP is low, use his skill “Flaming Bloodbath”. (The lower the HP, the higher the damage.)
2. Second stage: the boss comes out. You only need to defend and recover. After several rounds, this stage will end automatically.
3. Third Stage: Throw the attack item "Fire Dragon Dart" to attack the boss. Ignore the two disciples.
PS: Cook enough "Beggar Chicken" to eat (which can recover high HP/MP for all members)
Using the cooking by-product "Doughball" to disable the disciples is also useful.
Using the cooking by-product "One-Hit-Dizzy Cake" as the final hit to kill the boss, you will get the achievement "One-Hit-Dizzy".

In the Sea of Thundercloud against the big fish:
The fish will use skill to restore 50% HP when its HP is below 30%. So when its HP is low, make sure to reduce its DEX, and kill it in one round with high damage attack. Try to attack the fish fins and tail first. After its fins and tail are lost, its ATK will greatly decrease, and then easy to beat it.
In the second stage, the fish will turn into a bird. Remember to add anti-confusion attribute and bring pills which can release the confusion debuff.

In Archaeo-continent against Shuhu:
Recommended level:35-37
It has a skill to reduce your HP to 1. So it’s best for Tusu to use the skill “Flaming Bloodbath” to cause big damage! Eat a Nine-heron Incense to enter the damage immune status, so that Tusu can keep the 1 HP status.
Try using Xiang Ling’s skill “Divine Fox Illusion” and Hong Yu’s Metal Sorcery “Heaven Thunder”.

In Mount Yao against the black dragon:
Reset Tusu’s Astrototem to add Earth attribute until Tusu learns the Earth Sorcery “Infinite Pure Land”. You don’t need to attack the dragon , just use this sorcery to defend. After several rounds, the battle will end automatically.

In Purple Banyan Forest against Lingduan
Reset Xiang Ling's astrototem. 12 connected Water(Blue color) points can let Xiang Ling learn the Water Ultimate Sorcery "Bingyi in Cloud". This spell can 100% restore HP for all members, and immune to all damage for 1 round. By the way, this spell costs lots of MP.
Cook enough "Beggar Chicken" to restore HP for group.
Prepare enough Fire Talismans. You can throw it to attack when you are in the Disabled State because of Lingduan's skill.

In Tianyong Sect against Master:
Before you go to Tianyong Sect, you must exchange the weapon “Bloodthirsty Sword” for Tusu in White Emperor City. This sword can steal enemy’s HP, which is very useful! Then it’s easy to fight against Master.
If you didn't exchange that sword, maybe reset Tusu’s Astrototem to add Water attribute until Tusu learns the Water Sorcery “Bingyi in Cloud".
Be careful that Master will open the sword shield and start his Physical Damage Reflecting skill when his HP is low. You'll be equally damaged when you attack him by physical skills at that time. If you have the weapon “Bloodthirsty Sword”, then it's nothing to worry about : )
Throwing attack items (like the Fire Talisman) will be useful.

In Penglai against Darkcloud Gallopsky:
It will summon the person corresponding to each member's thoughts. Each member should throw attack items to their related person.

In Penglai against final boss:
Tusu must be on the battlefield. It’s better for Tusu to use Fenji Sword as final weapon.
When the boss enters second stage, he won’t attack for 5 rounds, and you must attack as much as possible to reduce at least 20% of enemy’s HP, or in the 6th round, the boss will use instant skill to kill you all.
Cook enough “Beggar Chicken”, “First-class Tofu”, “Eight Treasure Duck” to use.
Water Sorcery “Bingyi in Cloud” of Lansheng or Qingxue will be useful.

By the way, cooking system is very useful.
Below are some useful food in combat.
Cook 25 “Blessing Of Humble Family” and 25 “Song's Fish Potage” to learn “First-class Tofu”
Cook 25 “Scholar Chicken” and 25 “Phoenix in Peony” to learn “Beggar Chicken”

These Combination Skills are very powerful. Try them in the combat.
(When you have 5 AP and the Combination Skills only require 4 AP, then don't use the remaining 1 AP, or the Combination Skills will not be triggered)
Baili Tusu:
Mystic Truth Sword + Burning Flame= Mystic Sky Flame,
Mystic Truth Sword + Bloody Tyrant= Soul Rending,

Fang Lansheng:
Agni Mudra + Dancing Leaves and Petals= Holy Fire of Buddha,
Bodhyangi Mudra + Snow Moonlight= Silent Rosa Rubus,

Yin Qianshang:
Drink A Toast + Rock Stacking= Universe in Flagon,
Drink A Toast + Heavy Slash= Overturning Mountains,

Feng Qingxue:
Cold Moon + Freezing= Ice Feather,
Cold Moon + Waning Moon= Burying the Moon,

Xiang Ling:
Red Earth + Dancing Leaves and Petals= Fiery Trees Silver Flowers,
Red Earth + Money Rain= Meteor Shower,

Hong Yu:
Scattered Shadows + Lightning= Thunder Awakening,
Scattered Shadows + Subtle Fragrance= Dazzling Dance