Zhèxiē jiǎ wénwù zuò de yǐjiǎluànzhēn, piàn guò le bù shǎo shōucángjiā.
These fake antiques are made convincingly enough to fool many collectors.
Tips
history
From Yan Zhitui's Northern-Qi 《颜氏家训》: 馀分闰位,谓以伪乱真耳 — originally 以伪乱真 in the classical source; the character 伪 was later substituted with 假 in modern usage.
usage
Can be pejorative (fraud, counterfeits) or mildly admiring (high-quality reproductions, special effects, skilled imitations). Context usually makes the valence clear.