長輩圖 [长辈图]

Jyutping zoeng2 bui3 tou4
Pinyin zhǎng bèi tú

Definitions (粵典–words.hk)

名詞、潮語
泛指一種迎合老人家審美觀嘅網絡圖片；圖片以色彩鮮豔嘅文字為主，風景、花草嘅相片做背景，即係大約流行於1990年代至廿一世紀初嘅技術同藝術風格（量詞：張／幅）
online image with text, designed in a style favoured by the elderly, rainbow text with nature background

Definitions (Wiktionary)

noun, Internet
"boomer graphic", a style of graphic shared on social media with a stereotypical form being greetings (or Buddhist phrases, or otherwise well-meaning text) typeset in difficult-to-read colors and fonts and overlaid over an image of a lotus flower

Jyutping
Pinyin zhǎng bèi tú

Definitions (CC-CEDICT)