Regardless of whether you're a new player or an old friend, everyone is eager to know the strength rankings of Yin and Fei. According to the character's T-tier list, it largely determines the direction of everyone's cultivation and the adjustment of team role combinations. Since the combat mechanism of this work is quite unique, with team configurations based on the lunar phase mechanism, the following will also reveal the strength rankings according to the classification of lunar phases. Quickly check if you have any of these powerful characters in your hands.

I. New Moon
T0: Seth
Seth is a stable and reliable source of energy for teammates in battle. As a support, her healing ability is particularly exaggerated. Every 4 normal attacks can trigger a healing effect equal to 45% of her own HP. Considering her passive and fully upgraded state, when a teammate's HP first drops by more than half, they can get an additional healing effect from Seth. Her ultimate skill rewinds time, restoring the state of her teammates 3 seconds ago, and provides a significant amount of healing, along with a purification effect that prioritizes removing control effects. Although her abilities are relatively simple, she can provide extremely powerful healing to her teammates, greatly enhancing their sustainability and ensuring that they remain in optimal condition for output as much as possible.

T1: Returning Amy
Her main effects focus on damage reduction and healing. Although she has decent healing, it still falls short compared to Seth. However, due to her excellent damage reduction and a certain degree of stun control, she firmly holds a T1 tier.

II. Waning Crescent
T0: A Cappella
In the game, there is a shared energy pool setting, where all characters in battle have their energy recovery speed determined by this pool. If someone dies, it means one less person contributing to the energy pool, slowing down the pool's recovery speed significantly, which in turn slows down the overall pace of the battle. Under such circumstances, the combat pressure increases dramatically. She is the only character who can make the energy pool's recovery highly efficient. Her ultimate skill costs very little and can increase the energy recovery speed by 35% for 10 seconds, providing a very noticeable benefit.

Additionally, she also provides continuous healing for the entire team, along with a high physical and magical output buff, and a considerable critical hit bonus. In short, this is a perfect support card, with superior support capabilities, comprehensive coverage, and easy to obtain, offering extremely high value for money. The cost required is very low, not resource-intensive, while also providing high buffs, and most importantly, the attributes of her ultimate skill. Although she is a character from a common faction, she outshines those from the prestigious ancestral faction.

T1: Bella
Bella is a rather unique character with summoning abilities. She can also heal her summoned creatures with a portion of her own HP, making them quite durable. The offline puppet will become the primary target of enemies, allowing her to stay in a relatively safe environment to deal substantial magic damage. Whether used as the main DPS or secondary DPS, she is quite effective.

III. Waxing Gibbous
T0: Lamia, Van Helsing, Returning Hati
Lamia is a very strong magic damage dealer, with a standout ability being her AoE (Area of Effect) damage, which is very effective at clearing multiple enemies. She has a passive with a life steal effect, ensuring her own sustainability, and her attributes have a high upper limit, with good HP, making her survival capability strong. She is especially suitable for stages with multiple rounds of summoning, as she can enhance the team's benefits. She can be placed in any team as a versatile character and is a powerful tool for advancing through the main storyline. Players who enjoy magic damage should definitely choose her.

Van Helsing is a character with outstanding shooting skills, capable of continuously dealing high critical damage and launching powerful and fierce attacks against the enemy. By stacking corresponding layers, he not only increases his attack speed but also deals AoE explosive damage to enemies within a circular range, making his output capability extremely impressive. Returning Hati mainly uses the "plague" effect stacked on herself to continuously infect all enemies, causing continuous negative effects to the enemy.
The strength rankings of Yin and Fei are as shared above. Different lunar phase characters have their corresponding powerful roles. If you can obtain T0 tier characters, naturally, you would cultivate them without hesitation. However, even if you don't have T0, T1 tier characters are also quite good, bringing considerable benefits and worth choosing.