甘之如飴

1. • lit. as sweet as syrup (idiom, from Book of Songs) to endure hardship gladly
2. • a glutton for punishment

Character by character

• 甘(gān)surname Gan
• 之(zhī)(possessive particle, literary equivalent of 的 de)
• 如(rú)as
• 飴(yí)maltose syrup