I have done GCSE Chinese and can give you some information.
The first one is indeed Chinese. The portrait is that of Sun Yat-Sen, the founding father of the Republic of China. The Chinese characters translate to "25th year of the Republic of China" (1937). Dr Sun died in 1925 and so this is a commemoration item. The reverse states finess 98.00 (98%), Weight 1.000. The logo is that of the Hang Seng Bank in Hong Kong. I won't describe it as coin coin weight but (if genuine) as a silver ingot issued by a bank.
The second silver weight: this has characters for Hunan Provence. The weight is one Tael which is a traditional Chinese weight. "In China, there were many different weighting standards of tael depending on the region or type of trade. In general the silver tael weighed around 40 grams (1.3 ozt). The most common government measure was the Kuping; "treasury standard") tael, weighing 37.5 grams (1.21 ozt). A common commercial weight, the Caoping "canal shipping standard") tael weighed 36.7 grams (1.18 ozt) of marginally less pure silver.