2 sentences for 遗书 (yí​shū — testament)

1. 他写下了这封遗书，与家人长诀。

   tā xiě​xià le zhè fēng yí​shū, yǔ jiā​rén cháng​jué.

   He wrote this final letter to bid a permanent farewell to his family.

   Source: Dong Chinese Dictionary

2. 警察在死者的书桌上发现了一封简短的遗书。

   jǐng​chá zài sǐ​zhě de shū​zhuō shàng fā​xiàn le yī fēng jiǎn​duǎn de yí​shū.

   The police found a short suicide note on the deceased person's desk.

   Source: Dong Chinese Dictionary