"Three hundred Tang Poems" is just a collection of essays compiled by Heng Tang in Qing Dynasty.
There are more than 48,900 complete Tang poems, but this specific figure is controversial. Some people have verified that it is 49,403 poems.
Zhonghua Book Company also has an external compilation of all Tang poems, but there is duplication.
In addition, Supplement to the Whole Tang Poetry also included another 6,372 poems.
And with the discovery of new materials, the number of Tang poems is still increasing.
It is estimated that there should be 55,000 existing Tang poems.