To meet all of you here is indeed a great fortune.
Tips
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幸甚 is classical/epistolary (书信 shūxìn) Chinese — common in formal letters, business emails to senior figures, and Cao Cao's 龟虽寿 (each stanza ends 幸甚至哉, xìngshèn zhì zāi). Avoid in casual conversation; use 太好了 instead.