That mother hit her son with a belt on the street while everybody was watching!
Examples (Wiktionary)
Cantonese
缆皮带
纜皮帶
laam6 pei4 daai2
to wear a leather belt
Mandarin
另一名冲锋队警员王英杰认为，新制服最大优点是取消了以往俗称「天地线」的肩膀直带及腰间皮带，外衣的反光带亦有助警员控制人群及处理交通意外。
另一名衝鋒隊警員王英傑認為，新制服最大優點是取消了以往俗稱「天地線」的肩膀直帶及腰間皮帶，外衣的反光帶亦有助警員控制人群及處理交通意外。
lìng yī míng chōng fēng duì jǐng yuán wáng yīng jié rèn wèi ， xīn zhì fú zuì dà yōu diǎn shì qǔ xiāo le yǐ wǎng sú chēng “ tiān dì xiàn ” de jiān bǎng zhí dài jí yāo jiān pí dài ， wài yī de fǎn guāng dài yì yǒu zhù jǐng yuán kòng zhì rén qún jí chù lǐ jiāo tōng yì wài ．
Another police officer from the Emergency Unit, Wong Ying-kit believes that the biggest advantage of the new uniform is the abolition of Sam Browne belt, dubbed as "sky and ground belt" previously. Reflective stripes on the coat also benefits crowd control and dealing with traffic accidents.