敬惜字纸

to treasure written material as a cultural resource (idiom)

letter / symbol / character / word / CL:個|个[ge4] / courtesy or style name traditionally given to males aged 20 in dynastic China

variant of 紙|纸[zhi3]

paper / CL:張|张[zhang1],沓[da2] / classifier for documents, letter etc

to respect / to venerate / to salute / to offer

(bound form) respectful; to respect / to offer politely

to cherish / to begrudge / to pity / Taiwan pr. [xi2]