Tā / zài / xìn / mò / xiě / dào / yán / yǔ / bù / zhōu / zhī / chù / shàng / qí / qǐ / shù

他在信末写道，言语不周之处，尚祈乞恕。

At the end of his letter, he wrote that he hoped any inappropriate wording would be forgiven.