He conducted this experiment several times and concluded with a sigh:
1. **Human Bloodline Replacement:** Human blood could be replaced easily as long as they had strong healing ability and strong body. Higher-level humans were more difficult to change their bloodline, while mortals had the highest chance of successful bloodline change, but die because they didn't have strong bodies.
2. **Beast Bloodline Weakening:** The more bloodlines introduced to a Demonic beast, the weaker their bloodline became due to clashes between different bloodlines. However, they recovered soon as long as sufficient nutrients are available and seemed slightly stronger afterward, with their cultivation unaffected, it is like his tranning with spiritual stones.
From these experiments, he realized that completely abandoning his bloodline was not possible. Two years had passed since he left the crab city.
---
**System: Talent Enhancement System**
**Name:** Rock Crab
**Age:** 10 Years / 20 Years
**Race:** Demonic Beast (Level 9)
**Skills:**
- Rock Smash (Level 5) [256/500]
- Eating (Level 4) [102/400]
- Swimming (Level 4) [350/400]
- Stone Shell Breathing Technique (Level 2) [Max]
- Walking (Level 4) [12/400]
*Note: To break through the next level, abandon the bloodline.*
---
He sighed deeply, realizing he only had 10 years left; half of his life was over. From Xie Jian, he learned that Foundation Building realm crabs' lifespans increased by 300 years. Even Xie Jian himself could live 100 years in the Qi Refining realm, possibly due to the introduction of dragon bloodline, as dragons have long lifespans.
Stolen story; please report.
So, if he broke through even normally, he thought he might not live 300 years.
The crab was feeling down because he didn't know how to break through to the next level, but he still went to check on his experiment subjects.
He went in and he noticed one of the experiment's which had a worm.
In insects, he concluded something significant: some insects had bloodlines and were not blocked much like other insects. One of them was worms. They were low-intelligence creatures that didn't fear much. It was very hard to keep them alive as they either fought to the death or ran away. When he entered the worm's place, the worm used a fire attack on him.
The crab was shocked, "How is this possible?" This worm's bloodline was earth-type and could only use earth-type attacks until now.
He went towards the worm and cut it in half with his sharp claw. He noticed that his bloodline was a little different from the past. Now, a part of his bloodline included flame beast traits, while the rest remained his original.
After conducting several experiments, the crab could now somewhat identify the differences in bloodlines.
After fully examining the worm, the crab thought, "Maybe I am going the wrong way. What if I manage to merge my bloodline? Wouldn't I have the power of different bloodlines and indirectly break through the bloodline limit?" He always felt that this blue thing called the system was definitely unique, as his intelligence was far higher than normal beasts.
He asked the system, "Is it possible to merge different bloodlines and create a new species?”
A new message appeared on the system:
---
**System: Talent Enhancement System**
**Name:** Rock Crab
**Age:** 10 Years / 20 Years
**Race:** Demonic Beast (Level 9)
**Skills:**
- Rock Smash (Level 5) [256/500]
- Eating (Level 4) [102/400]
- Swimming (Level 4) [350/400]
- Stone Shell Breathing Technique (Level 2) [Max]
- Walking (Level 4) [12/400]
**Note:** Merge different bloodlines to break through to a higher level.
---
He saw the new message in the system section and said, "Merge different bloodlines to break through to a higher level."
He was excited after seeing this message and he continued his experiments for several more months, focusing mainly on worms. He concluded that worms could easily change their bloodlines, and even insects could start cultivation, but their strength seemed to decline compared to those who broke through directly without bloodline changes, but breakthrough is much easier.
He sighed in frustration. Even though he could merge one bloodline, trying to merge multiple bloodlines in succession often led to failure. The success rate of merging a single bloodline was only about 40%. The rest of the time, his subjects either died or the process was unsuccessful.
With humans, if you introduced a new bloodline to them, they needed to have strong bodies, or they wouldn't survive. Whether higher-level humans could do this more easily or not, he didn't know.
Crab thought, "Maybe Xia Jian's ancestor was given dragon blood and merged his bloodline with it. They might have used some additional resources to merge properly without dying. After all, I have concluded that the higher the level, the higher the difficulty of merging bloodlines."
"I have the system," he thought, "and it itself is telling me I need to merge multiple bloodlines. Maybe it will be successful.”
After all, he knew that ever since he received the Demonic beast language, his knowledge seemed to be improving much faster than others. Every book he read or experiment he conducted seemed to increase his understanding. The system was helping him to absorb and accept knowledge.
So he thought of trying with weaker ones first, then moving to stronger ones. As long as he found out the difficulty of bloodline change with weaker ones, he could directly move tostronger ones. The system might help him increase the probability of success.