In "Three Kingdoms Conquer the Rivers and Mountains", Xu Shu is designed to have both support and combo abilities, making him one of the more effective characters. Regarding the question of whether Xu Shu is useful in "Three Kingdoms Conquer the Rivers and Mountains", I would recommend him based on his role. Currently, there are quite a few combo characters available, so it's worth understanding these characters and forming a team with them. In this way, Xu Shu can be very useful.
Let's start with Xu Shu's ultimate skill, Recommendation. This is his powerful ultimate move. When Xu Shu uses this skill, he grants a Recommendation effect to nearby friendly units, instantly increasing their tactical attack speed by 509. More importantly, if the target is a Shu general, the increase is as high as 50%, and this effect lasts for 5 seconds. This is extremely crucial in battles, especially in team fights or key battles, as it enhances the output of Shu generals.

Next, let's talk about the combo skill. This skill gives Shu generals a 35% chance to trigger a combo after a normal attack. Don't underestimate this 35% chance; once triggered, the damage during the combo increases by 65%. The Clear Recommendation skill is also excellent, giving Shu generals a 25% chance to seal the enemy's tactics when they trigger a combo, and this sealing effect lasts for 3 seconds. In battle, this is equivalent to restricting the enemy's key generals from using their skills. The Loyal and Filial Warrior skill has a unique effect: Recommendation not only dispels the poisoning status of the target, ensuring the survival of the general, but also restores 245% of the target's attack power in terms of troops.
Finally, the Aid in Distress skill brings two benefits to Shu generals. On one hand, it increases the combo chance of Shu generals by an additional 15%, enhancing the likelihood of triggering combos. On the other hand, the damage during combos is increased by an additional 100%. Xu Shu demonstrates impressive strength on the battlefield, with his various stats highlighting his unique combat capabilities. In terms of attack, his attack value is as high as 16036. In terms of troops, Xu Shu has 133184 troops, providing him with sufficient manpower reserves on the battlefield.

His leadership attribute is 83, indicating that he has excellent main general capabilities. However, currently, the generally preferred main generals tend to have strong output. Since Xu Shu's role is mainly supportive, this might have some impact. His critical hit attribute is 230, which allows him to deal significant damage in battle. His accuracy attribute is 283, ensuring a high hit rate and preventing frequent misses that waste attack opportunities.
His critical hit damage is 150, meaning that when a critical hit occurs, it not only hits the target but also deals substantial extra damage. His defense attribute is 4444, which, although not very high, is understandable given his supportive role. His martial value is 64, which, while not particularly outstanding compared to some renowned warriors, is sufficient for self-defense and combat in close-range battles. His strategy attribute is 93, indicating his considerable performance in terms of intelligence.

His action speed is 100, ensuring a consistent attack frequency and rhythm in battle. Additionally, Xu Shu has a special breakthrough bonus: upon entering the battlefield, he immediately releases a tactic. This skill has significant strategic importance, allowing him to strike the enemy early in the battle. Moreover, this tactic has an 85% chance to remove control effects from friendly targets, with each target calculated separately. This means that in battle, he can help friendly units break free from enemy control, restoring their freedom of movement. Furthermore, the breakthrough also provides a 15% increase in attack, 15% increase in defense, and a 24% increase in troops, enhancing his overall combat capability on the battlefield.

This is the introduction to whether Xu Shu is useful in "Three Kingdoms Conquer the Rivers and Mountains". If you are looking for a versatile support character in the game, Xu Shu is definitely worth trying. Although he may not have the highest quality, his base stats are still quite good.