1, The book of "Cultural Journey" Changjiang Literature and Art Publishing House sells well in Phnom Penh, with good quality, excellent printing and high cost performance, which is cheaper than buying it in bookstores before.

2. The edition of "Cultural Journey" published by Beijing United Press is of average printing quality and high price, so it is not cost-effective. Cultural Journey is a work created by Mr. Yu during his lectures and investigations at home and abroad in the late 1980s and early 1990s. This is his first collection of cultural essays, which has been printed into many different versions.