He was still lacking the following materials for his Tenth-grade Golden Core.
Ten arbitrary grade entries, two Nascent Soul corpses, nine Second-grade Golden Cores, one Eight Desolate Fruit, and one stem of Evil Wood.
That part about ten arbitrary grade entries was the least of his worries, now that he was at the sixth level of Foundation Establishment. He still had three small realms to go before reaching the pinnacle of Foundation Establishment, which meant he could obtain three more entries, plus he could still use the Heavenly Dao Retrospective Talisman once, making it four entries.
Together with some less useful entries, by gathering some entry jade slips, he could easily muster up ten useless arbitrary grade entries for use as pill refining materials.
There was no difficulty in this.