"Senior, this thing is much more troublesome than anticipated. Allow me to assist you with protection."
The Wudang Sect Leader knows that Wen Yan is offering him a way out. While he was casting a spell, he was sneak attacked. He had to either endure it or abandon the spell and dodge.
Opening an altar as a Taoist comes with these vulnerabilities. The bigger the altar, the less room for adjustments halfway.
He had prepared to withstand it, but didn't expect Wen Yan to react so quickly.
The Wudang Sect Leader's expression is solemn. Holding a finger print, he nods seriously without saying a word.
Indeed, opening a grand altar requires protection. He actually brought people for this, but dispatched them elsewhere.
Most in Wudang are either unsuitable for action, or engaged in other matters — not feasible to exhaust everyone on one task.
While he was opening the altar, he also requested the Guardian Deity's protection. Though the altar appears as a target, it's not so fragile.
